diff --git a/configure b/configure
index 8f5ccb4f9..a63faa27a 100755
--- a/configure
+++ b/configure
@@ -1,7 +1,7 @@
 #! /bin/sh
 
 # Guess values for system-dependent variables and create Makefiles.
-# Generated automatically using autoconf version 2.13 
+# Generated automatically using autoconf version 2.13.1 
 # Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
 #
 # This configure script is free software; the Free Software Foundation
@@ -335,7 +335,7 @@ EOF
     verbose=yes ;;
 
   -version | --version | --versio | --versi | --vers)
-    echo "configure generated by autoconf version 2.13"
+    echo "configure generated by autoconf version 2.13.1"
     exit 0 ;;
 
   -with-* | --with-*)
@@ -453,7 +453,7 @@ echo > confdefs.h
 
 # A filename unique to this package, relative to the directory that
 # configure is in, which we can look for to find out if srcdir is correct.
-ac_unique_file=Source/Collection.m
+ac_unique_file=Source/NSArray.m
 
 # Find the source files, if location was not specified.
 if test -z "$srcdir"; then
@@ -495,7 +495,7 @@ done
 
 if test -r "$cache_file"; then
   echo "loading cache $cache_file"
-  . $cache_file
+      test -f "$cache_file" && . $cache_file
 else
   echo "creating cache $cache_file"
   > $cache_file
@@ -571,9 +571,130 @@ done
 if test -z "$ac_aux_dir"; then
   { echo "configure: error: can not find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." 1>&2; exit 1; }
 fi
-ac_config_guess=$ac_aux_dir/config.guess
-ac_config_sub=$ac_aux_dir/config.sub
-ac_configure=$ac_aux_dir/configure # This should be Cygnus configure.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"
+ac_configure="$SHELL $ac_aux_dir/configure" # This should be Cygnus configure.
+
+
+echo $ac_n "checking host system type""... $ac_c" 1>&6
+echo "configure:581: checking host system type" >&5
+if test "x$ac_cv_host" = "x" || (test "x$host" != "xNONE" && test "x$host" != "x$ac_cv_host_alias"); then
+
+# Make sure we can run config.sub.
+  if $ac_config_sub sun4 >/dev/null 2>&1; then :
+    else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+  fi
+
+  ac_cv_host_alias=$host
+  case "$ac_cv_host_alias" in
+  NONE)
+    case $nonopt in
+    NONE)
+      if ac_cv_host_alias=`$ac_config_guess`; then :
+      else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
+      fi ;;
+    *) ac_cv_host_alias=$nonopt ;;
+    esac ;;
+  esac
+
+  ac_cv_host=`$ac_config_sub $ac_cv_host_alias`
+  ac_cv_host_cpu=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+  ac_cv_host_vendor=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+  ac_cv_host_os=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+else
+  echo $ac_n "(cached) $ac_c" 1>&6
+fi
+
+echo "$ac_t""$ac_cv_host" 1>&6
+
+host=$ac_cv_host
+host_alias=$ac_cv_host_alias
+host_cpu=$ac_cv_host_cpu
+host_vendor=$ac_cv_host_vendor
+host_os=$ac_cv_host_os
+
+
+
+
+
+echo $ac_n "checking target system type""... $ac_c" 1>&6
+echo "configure:622: checking target system type" >&5
+if test "x$ac_cv_target" = "x" || (test "x$target" != "xNONE" && test "x$target" != "x$ac_cv_target_alias"); then
+
+# Make sure we can run config.sub.
+  if $ac_config_sub sun4 >/dev/null 2>&1; then :
+    else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+  fi
+
+  ac_cv_target_alias=$target
+  case "$ac_cv_target_alias" in
+  NONE)
+    case $nonopt in
+    NONE)
+      ac_cv_target_alias=$host_alias ;;
+
+    *) ac_cv_target_alias=$nonopt ;;
+    esac ;;
+  esac
+
+  ac_cv_target=`$ac_config_sub $ac_cv_target_alias`
+  ac_cv_target_cpu=`echo $ac_cv_target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+  ac_cv_target_vendor=`echo $ac_cv_target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+  ac_cv_target_os=`echo $ac_cv_target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+else
+  echo $ac_n "(cached) $ac_c" 1>&6
+fi
+
+echo "$ac_t""$ac_cv_target" 1>&6
+
+target=$ac_cv_target
+target_alias=$ac_cv_target_alias
+target_cpu=$ac_cv_target_cpu
+target_vendor=$ac_cv_target_vendor
+target_os=$ac_cv_target_os
+
+
+
+
+
+echo $ac_n "checking build system type""... $ac_c" 1>&6
+echo "configure:662: checking build system type" >&5
+if test "x$ac_cv_build" = "x" || (test "x$build" != "xNONE" && test "x$build" != "x$ac_cv_build_alias"); then
+
+# Make sure we can run config.sub.
+  if $ac_config_sub sun4 >/dev/null 2>&1; then :
+    else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+  fi
+
+  ac_cv_build_alias=$build
+  case "$ac_cv_build_alias" in
+  NONE)
+    case $nonopt in
+    NONE)
+      ac_cv_build_alias=$host_alias ;;
+
+    *) ac_cv_build_alias=$nonopt ;;
+    esac ;;
+  esac
+
+  ac_cv_build=`$ac_config_sub $ac_cv_build_alias`
+  ac_cv_build_cpu=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+  ac_cv_build_vendor=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+  ac_cv_build_os=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+else
+  echo $ac_n "(cached) $ac_c" 1>&6
+fi
+
+echo "$ac_t""$ac_cv_build" 1>&6
+
+build=$ac_cv_build
+build_alias=$ac_cv_build_alias
+build_cpu=$ac_cv_build_cpu
+build_vendor=$ac_cv_build_vendor
+build_os=$ac_cv_build_os
+
+
+
 
 
 # Do some error checking and defaulting for the host and target type.
@@ -596,69 +717,6 @@ NONE---*---* | *---NONE---* | *---*---NONE) ;;
 *) { echo "configure: error: can only configure for one host and one target at a time" 1>&2; exit 1; } ;;
 esac
 
-
-# Make sure we can run config.sub.
-if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
-else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
-fi
-
-echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:607: checking host system type" >&5
-
-host_alias=$host
-case "$host_alias" in
-NONE)
-  case $nonopt in
-  NONE)
-    if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then :
-    else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
-    fi ;;
-  *) host_alias=$nonopt ;;
-  esac ;;
-esac
-
-host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias`
-host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-echo "$ac_t""$host" 1>&6
-
-echo $ac_n "checking target system type""... $ac_c" 1>&6
-echo "configure:628: checking target system type" >&5
-
-target_alias=$target
-case "$target_alias" in
-NONE)
-  case $nonopt in
-  NONE) target_alias=$host_alias ;;
-  *) target_alias=$nonopt ;;
-  esac ;;
-esac
-
-target=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $target_alias`
-target_cpu=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-target_vendor=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-echo "$ac_t""$target" 1>&6
-
-echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:646: checking build system type" >&5
-
-build_alias=$build
-case "$build_alias" in
-NONE)
-  case $nonopt in
-  NONE) build_alias=$host_alias ;;
-  *) build_alias=$nonopt ;;
-  esac ;;
-esac
-
-build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias`
-build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-echo "$ac_t""$build" 1>&6
-
 test "$host_alias" != "$target_alias" &&
   test "$program_prefix$program_suffix$program_transform_name" = \
     NONENONEs,x,x, &&
@@ -671,8 +729,8 @@ test "$host_alias" != "$target_alias" &&
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:675: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+echo "configure:733: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_CC+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$CC"; then
@@ -701,8 +759,8 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:705: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+echo "configure:763: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_CC+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$CC"; then
@@ -748,12 +806,12 @@ fi
 
   if test -z "$CC"; then
     case "`uname -s`" in
-    *win32* | *WIN32*)
+    *win32* | *WIN32* | *CYGWIN*)
       # Extract the first word of "cl", so it can be a program name with args.
 set dummy cl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:756: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+echo "configure:814: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_CC+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$CC"; then
@@ -783,8 +841,8 @@ fi
   test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; }
 fi
 
-echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:788: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) works""... $ac_c" 1>&6
+echo "configure:846: checking whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -795,12 +853,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 799 "configure"
+#line 857 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:804: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:862: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -825,14 +883,14 @@ echo "$ac_t""$ac_cv_prog_cc_works" 1>&6
 if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
-echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:830: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
+echo "configure:888: checking whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:835: checking whether we are using GNU C" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
+echo "configure:893: checking whether we are using GNU C" >&5
+if eval "test \"\${ac_cv_prog_gcc+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
@@ -840,7 +898,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:844: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:902: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -859,8 +917,8 @@ ac_test_CFLAGS="${CFLAGS+set}"
 ac_save_CFLAGS="$CFLAGS"
 CFLAGS=
 echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:863: checking whether ${CC-cc} accepts -g" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
+echo "configure:921: checking whether ${CC-cc} accepts -g" >&5
+if eval "test \"\${ac_cv_prog_cc_g+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   echo 'void f(){}' > conftest.c
@@ -891,13 +949,13 @@ else
 fi
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:895: checking how to run the C preprocessor" >&5
+echo "configure:953: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
 fi
 if test -z "$CPP"; then
-if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then
+if eval "test \"\${ac_cv_prog_CPP+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     # This must be in double quotes, not single quotes, because CPP may get
@@ -906,13 +964,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 910 "configure"
+#line 968 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:916: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:974: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -923,13 +981,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 927 "configure"
+#line 985 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:933: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:991: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -940,13 +998,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 944 "configure"
+#line 1002 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:950: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1008: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -985,14 +1043,14 @@ PIPE='-pipe'
 #   include implementations of List, HashTable etc.
 #--------------------------------------------------------------------
 echo $ac_n "checking whether we are using NeXT's compiler""... $ac_c" 1>&6
-echo "configure:989: checking whether we are using NeXT's compiler" >&5
+echo "configure:1047: checking whether we are using NeXT's compiler" >&5
 cat > conftest.$ac_ext <<EOF
-#line 991 "configure"
+#line 1049 "configure"
 #include "confdefs.h"
 #include "$srcdir/config/config.nextcc.h"
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:996: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1054: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1012,16 +1070,16 @@ if test $NeXTCC = 0; then
     # Find out if nested functions work on this machine
     #----------------------------------------------------------------
     echo $ac_n "checking whether nested functions work""... $ac_c" 1>&6
-echo "configure:1016: checking whether nested functions work" >&5
+echo "configure:1074: checking whether nested functions work" >&5
     if test "$cross_compiling" = yes; then
   gcc_nested=1
 else
   cat > conftest.$ac_ext <<EOF
-#line 1021 "configure"
+#line 1079 "configure"
 #include "confdefs.h"
 #include "$srcdir/config/config.nested.c"
 EOF
-if { (eval echo configure:1025: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1083: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   gcc_nested=1
 else
@@ -1053,16 +1111,16 @@ fi
     # Find out if we're on a NEXTSTEP machine
     #----------------------------------------------------------------
     echo $ac_n "checking whether we are running under NEXTSTEP""... $ac_c" 1>&6
-echo "configure:1057: checking whether we are running under NEXTSTEP" >&5
+echo "configure:1115: checking whether we are running under NEXTSTEP" >&5
     cat > conftest.$ac_ext <<EOF
-#line 1059 "configure"
+#line 1117 "configure"
 #include "confdefs.h"
 #if defined(NeXT)
                 #error
                 #endif
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1066: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1124: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1090,16 +1148,16 @@ rm -f conftest*
       saved_ac_ext=$ac_ext
       ac_ext=m
       echo $ac_n "checking whether we are using GNU Objective C runtime""... $ac_c" 1>&6
-echo "configure:1094: checking whether we are using GNU Objective C runtime" >&5
+echo "configure:1152: checking whether we are using GNU Objective C runtime" >&5
       cat > conftest.$ac_ext <<EOF
-#line 1096 "configure"
+#line 1154 "configure"
 #include "confdefs.h"
 #include "$srcdir/config/config.nextrt.m"
 int main() {
 ;
 ; return 0; }
 EOF
-if { (eval echo configure:1103: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1161: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   NeXT_runtime=1
 else
@@ -1145,16 +1203,16 @@ else
     # Find out if we have NEXTSTEP 3.2 or lower
     #----------------------------------------------------------------
     echo "checking NEXTSTEP version" 1>&6
-echo "configure:1149: checking NEXTSTEP version" >&5
+echo "configure:1207: checking NEXTSTEP version" >&5
     cat > conftest.$ac_ext <<EOF
-#line 1151 "configure"
+#line 1209 "configure"
 #include "confdefs.h"
 #if NX_CURRENT_COMPILER_RELEASE < 320
     #error
     #endif
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1158: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1216: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1205,17 +1263,17 @@ for ac_hdr in objc/objc.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1209: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:1267: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1214 "configure"
+#line 1272 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1219: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1277: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1252,7 +1310,7 @@ fi
 # Check if libobjc was compiled with thread support.
 #--------------------------------------------------------------------
 echo $ac_n "checking whether objc has thread support""... $ac_c" 1>&6
-echo "configure:1256: checking whether objc has thread support" >&5
+echo "configure:1314: checking whether objc has thread support" >&5
 saved_LIBS="$LIBS"
 extra_LIBS=""
 case "${target_os}" in
@@ -1267,11 +1325,11 @@ if test $host_os = linux-gnu; then
   objc_threaded="-lpthread"
 else
   cat > conftest.$ac_ext <<EOF
-#line 1271 "configure"
+#line 1329 "configure"
 #include "confdefs.h"
 #include "config/config_thread.m"
 EOF
-if { (eval echo configure:1275: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1333: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   objc_threaded="-lpthread"
 else
@@ -1289,11 +1347,11 @@ fi
   objc_threaded="-lpcthread"
 else
   cat > conftest.$ac_ext <<EOF
-#line 1293 "configure"
+#line 1351 "configure"
 #include "confdefs.h"
 #include "config/config_thread.m"
 EOF
-if { (eval echo configure:1297: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1355: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   objc_threaded="-lpcthread"
 else
@@ -1312,11 +1370,11 @@ elif test "`echo $host_os|sed 's/[0-9].*//'|sed s/elf//`" = freebsd; then
   objc_threaded="-pthread"
 else
   cat > conftest.$ac_ext <<EOF
-#line 1316 "configure"
+#line 1374 "configure"
 #include "confdefs.h"
 #include "config/config_thread.m"
 EOF
-if { (eval echo configure:1320: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1378: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   objc_threaded="-pthread"
 else
@@ -1334,11 +1392,11 @@ fi
   objc_threaded="-lpthread"
 else
   cat > conftest.$ac_ext <<EOF
-#line 1338 "configure"
+#line 1396 "configure"
 #include "confdefs.h"
 #include "config/config_thread.m"
 EOF
-if { (eval echo configure:1342: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1400: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   objc_threaded="-lpthread"
 else
@@ -1357,11 +1415,11 @@ fi
   objc_threaded="-lpcthread"
 else
   cat > conftest.$ac_ext <<EOF
-#line 1361 "configure"
+#line 1419 "configure"
 #include "confdefs.h"
 #include "config/config_thread.m"
 EOF
-if { (eval echo configure:1365: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1423: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   objc_threaded="-lpcthread"
 else
@@ -1380,11 +1438,11 @@ else
   objc_threaded="-lthread"
 else
   cat > conftest.$ac_ext <<EOF
-#line 1384 "configure"
+#line 1442 "configure"
 #include "confdefs.h"
 #include "config/config_thread.m"
 EOF
-if { (eval echo configure:1388: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1446: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   objc_threaded="-lthread"
 else
@@ -1411,14 +1469,14 @@ ac_cv_objc_threaded=$objc_threaded
 # Byte order information needed for foundation headers.
 #--------------------------------------------------------------------
 echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
-echo "configure:1415: checking whether byte ordering is bigendian" >&5
-if eval "test \"`echo '$''{'ac_cv_c_bigendian'+set}'`\" = set"; then
+echo "configure:1473: checking whether byte ordering is bigendian" >&5
+if eval "test \"\${ac_cv_c_bigendian+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_bigendian=unknown
 # See if sys/param.h defines the BYTE_ORDER macro.
 cat > conftest.$ac_ext <<EOF
-#line 1422 "configure"
+#line 1480 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -1429,11 +1487,11 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:1433: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1491: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   # It does; now see whether it defined to BIG_ENDIAN or not.
 cat > conftest.$ac_ext <<EOF
-#line 1437 "configure"
+#line 1495 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -1444,7 +1502,7 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:1448: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1506: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_bigendian=yes
 else
@@ -1464,7 +1522,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1468 "configure"
+#line 1526 "configure"
 #include "confdefs.h"
 main () {
   /* Are we little or big endian?  From Harbison&Steele.  */
@@ -1477,7 +1535,7 @@ main () {
   exit (u.c[sizeof (long) - 1] == 1);
 }
 EOF
-if { (eval echo configure:1481: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1539: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_bigendian=no
 else
@@ -1511,15 +1569,15 @@ fi
 # Type size information needed for foundation headers.
 #--------------------------------------------------------------------
 echo $ac_n "checking size of void*""... $ac_c" 1>&6
-echo "configure:1515: checking size of void*" >&5
-if eval "test \"`echo '$''{'ac_cv_sizeof_voidp'+set}'`\" = set"; then
+echo "configure:1573: checking size of void*" >&5
+if eval "test \"\${ac_cv_sizeof_voidp+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1523 "configure"
+#line 1581 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
@@ -1530,7 +1588,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:1534: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1592: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_voidp=`cat conftestval`
 else
@@ -1556,15 +1614,15 @@ GS_UINT8="unsigned char"
 
 
 echo $ac_n "checking size of short""... $ac_c" 1>&6
-echo "configure:1560: checking size of short" >&5
-if eval "test \"`echo '$''{'ac_cv_sizeof_short'+set}'`\" = set"; then
+echo "configure:1618: checking size of short" >&5
+if eval "test \"\${ac_cv_sizeof_short+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1568 "configure"
+#line 1626 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
@@ -1575,7 +1633,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:1579: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1637: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_short=`cat conftestval`
 else
@@ -1597,15 +1655,15 @@ EOF
 
 
 echo $ac_n "checking size of int""... $ac_c" 1>&6
-echo "configure:1601: checking size of int" >&5
-if eval "test \"`echo '$''{'ac_cv_sizeof_int'+set}'`\" = set"; then
+echo "configure:1659: checking size of int" >&5
+if eval "test \"\${ac_cv_sizeof_int+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1609 "configure"
+#line 1667 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
@@ -1616,7 +1674,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:1620: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1678: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_int=`cat conftestval`
 else
@@ -1638,15 +1696,15 @@ EOF
 
 
 echo $ac_n "checking size of long""... $ac_c" 1>&6
-echo "configure:1642: checking size of long" >&5
-if eval "test \"`echo '$''{'ac_cv_sizeof_long'+set}'`\" = set"; then
+echo "configure:1700: checking size of long" >&5
+if eval "test \"\${ac_cv_sizeof_long+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1650 "configure"
+#line 1708 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
@@ -1657,7 +1715,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:1661: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1719: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_long=`cat conftestval`
 else
@@ -1679,15 +1737,15 @@ EOF
 
 
 echo $ac_n "checking size of long long""... $ac_c" 1>&6
-echo "configure:1683: checking size of long long" >&5
-if eval "test \"`echo '$''{'ac_cv_sizeof_long_long'+set}'`\" = set"; then
+echo "configure:1741: checking size of long long" >&5
+if eval "test \"\${ac_cv_sizeof_long_long+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1691 "configure"
+#line 1749 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
@@ -1698,7 +1756,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:1702: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1760: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_long_long=`cat conftestval`
 else
@@ -1720,15 +1778,15 @@ EOF
 
 
 echo $ac_n "checking size of float""... $ac_c" 1>&6
-echo "configure:1724: checking size of float" >&5
-if eval "test \"`echo '$''{'ac_cv_sizeof_float'+set}'`\" = set"; then
+echo "configure:1782: checking size of float" >&5
+if eval "test \"\${ac_cv_sizeof_float+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1732 "configure"
+#line 1790 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
@@ -1739,7 +1797,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:1743: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1801: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_float=`cat conftestval`
 else
@@ -1761,15 +1819,15 @@ EOF
 
 
 echo $ac_n "checking size of double""... $ac_c" 1>&6
-echo "configure:1765: checking size of double" >&5
-if eval "test \"`echo '$''{'ac_cv_sizeof_double'+set}'`\" = set"; then
+echo "configure:1823: checking size of double" >&5
+if eval "test \"\${ac_cv_sizeof_double+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1773 "configure"
+#line 1831 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
@@ -1780,7 +1838,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:1784: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1842: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_double=`cat conftestval`
 else
@@ -1983,8 +2041,8 @@ fi
 #	Defines CON_AUTOLOAD (whether constructor functions are autoloaded)
 #--------------------------------------------------------------------
 echo $ac_n "checking loading of constructor functions""... $ac_c" 1>&6
-echo "configure:1987: checking loading of constructor functions" >&5
-if eval "test \"`echo '$''{'objc_cv_con_autoload'+set}'`\" = set"; then
+echo "configure:2045: checking loading of constructor functions" >&5
+if eval "test \"\${objc_cv_con_autoload+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.constructor.c <<EOF
@@ -2024,17 +2082,17 @@ fi
 DYNAMIC_LINKER=null
 ac_safe=`echo "dlfcn.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dlfcn.h""... $ac_c" 1>&6
-echo "configure:2028: checking for dlfcn.h" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2086: checking for dlfcn.h" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2033 "configure"
+#line 2091 "configure"
 #include "confdefs.h"
 #include <dlfcn.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2038: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2096: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2058,17 +2116,17 @@ fi
 if test $DYNAMIC_LINKER = null; then
   ac_safe=`echo "dl.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dl.h""... $ac_c" 1>&6
-echo "configure:2062: checking for dl.h" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2120: checking for dl.h" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2067 "configure"
+#line 2125 "configure"
 #include "confdefs.h"
 #include <dl.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2072: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2130: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2093,17 +2151,17 @@ fi
 if test $DYNAMIC_LINKER = null; then
   ac_safe=`echo "windows.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for windows.h""... $ac_c" 1>&6
-echo "configure:2097: checking for windows.h" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2155: checking for windows.h" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2102 "configure"
+#line 2160 "configure"
 #include "confdefs.h"
 #include <windows.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2107: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2165: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2128,17 +2186,17 @@ fi
 if test $DYNAMIC_LINKER = null; then
   ac_safe=`echo "dld/defs.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dld/defs.h""... $ac_c" 1>&6
-echo "configure:2132: checking for dld/defs.h" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2190: checking for dld/defs.h" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2137 "configure"
+#line 2195 "configure"
 #include "confdefs.h"
 #include <dld/defs.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2142: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2200: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2178,19 +2236,19 @@ if test x"$ac_cv_objc_threaded" != x""; then
 fi
 LIBS="$LIBS $extra_LIBS"
 echo $ac_n "checking if +load method is executed before main""... $ac_c" 1>&6
-echo "configure:2182: checking if +load method is executed before main" >&5
-if eval "test \"`echo '$''{'objc_load_method_worked'+set}'`\" = set"; then
+echo "configure:2240: checking if +load method is executed before main" >&5
+if eval "test \"\${objc_load_method_worked+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
   objc_load_method_worked=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2190 "configure"
+#line 2248 "configure"
 #include "confdefs.h"
 #include "$srcdir/config/config.loadtest.m"
 EOF
-if { (eval echo configure:2194: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2252: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   objc_load_method_worked=yes
 else
@@ -2224,12 +2282,12 @@ CPPFLAGS="$saved_CPPFLAGS"
 for ac_func in objc_condition_timedwait
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2228: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:2286: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2233 "configure"
+#line 2291 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2238,6 +2296,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -2247,12 +2306,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:2256: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2315: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2283,12 +2342,12 @@ LIBS="$saved_LIBS"
 # Generic settings needed by NSZone.m
 #--------------------------------------------------------------------
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:2287: checking for ANSI C header files" >&5
-if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
+echo "configure:2346: checking for ANSI C header files" >&5
+if eval "test \"\${ac_cv_header_stdc+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2292 "configure"
+#line 2351 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -2296,7 +2355,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2300: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2359: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2313,7 +2372,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 2317 "configure"
+#line 2376 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -2331,7 +2390,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 2335 "configure"
+#line 2394 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -2352,7 +2411,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 2356 "configure"
+#line 2415 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -2363,7 +2422,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:2367: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2426: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -2387,12 +2446,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:2391: checking for size_t" >&5
-if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
+echo "configure:2450: checking for size_t" >&5
+if eval "test \"\${ac_cv_type_size_t+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2396 "configure"
+#line 2455 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -2403,38 +2462,40 @@ EOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   egrep "(^|[^a-zA-Z_0-9])size_t[^a-zA-Z_0-9]" >/dev/null 2>&1; then
   rm -rf conftest*
-  ac_cv_type_size_t=yes
+  eval "ac_cv_type_size_t=yes"
 else
   rm -rf conftest*
-  ac_cv_type_size_t=no
+  eval "ac_cv_type_size_t=no"
 fi
 rm -f conftest*
 
 fi
-echo "$ac_t""$ac_cv_type_size_t" 1>&6
-if test $ac_cv_type_size_t = no; then
-  cat >> confdefs.h <<\EOF
+if eval "test \"`echo '$ac_cv_type_'size_t`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+  cat >> confdefs.h <<EOF
 #define size_t unsigned
 EOF
 
 fi
 
 echo $ac_n "checking for inline""... $ac_c" 1>&6
-echo "configure:2424: checking for inline" >&5
-if eval "test \"`echo '$''{'ac_cv_c_inline'+set}'`\" = set"; then
+echo "configure:2485: checking for inline" >&5
+if eval "test \"\${ac_cv_c_inline+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_inline=no
 for ac_kw in inline __inline__ __inline; do
   cat > conftest.$ac_ext <<EOF
-#line 2431 "configure"
+#line 2492 "configure"
 #include "confdefs.h"
 
 int main() {
 } $ac_kw foo() {
 ; return 0; }
 EOF
-if { (eval echo configure:2438: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2499: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_inline=$ac_kw; break
 else
@@ -2464,12 +2525,12 @@ esac
 # Following header checks needed for bzero in Storage.m and other places
 #--------------------------------------------------------------------
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:2468: checking for ANSI C header files" >&5
-if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
+echo "configure:2529: checking for ANSI C header files" >&5
+if eval "test \"\${ac_cv_header_stdc+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2473 "configure"
+#line 2534 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -2477,7 +2538,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2481: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2542: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2494,7 +2555,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 2498 "configure"
+#line 2559 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -2512,7 +2573,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 2516 "configure"
+#line 2577 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -2533,7 +2594,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 2537 "configure"
+#line 2598 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -2544,7 +2605,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:2548: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2609: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -2571,17 +2632,17 @@ for ac_hdr in string.h memory.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2575: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2636: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2580 "configure"
+#line 2641 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2585: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2646: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2615,17 +2676,17 @@ for ac_hdr in values.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2619: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2680: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2624 "configure"
+#line 2685 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2629: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2690: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2659,17 +2720,17 @@ for ac_hdr in sys/stat.h sys/vfs.h sys/statfs.h sys/statvfs.h pwd.h grp.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2663: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2724: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2668 "configure"
+#line 2729 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2673: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2734: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2699,17 +2760,17 @@ for ac_hdr in sys/mount.h sys/types.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2703: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2764: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2708 "configure"
+#line 2769 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2713: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2774: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2738,12 +2799,12 @@ done
 for ac_func in statvfs
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2742: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:2803: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2747 "configure"
+#line 2808 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2752,6 +2813,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -2761,12 +2823,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:2770: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2832: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2799,17 +2861,17 @@ for ac_hdr in sys/time.h sys/rusage.h ucbinclude/sys/resource.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2803: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2865: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2808 "configure"
+#line 2870 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2813: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2875: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2843,17 +2905,17 @@ for ac_hdr in sys/socket.h netinet/in.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2847: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2909: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2852 "configure"
+#line 2914 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2857: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2919: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2887,17 +2949,17 @@ for ac_hdr in syslog.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2891: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:2953: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2896 "configure"
+#line 2958 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2901: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2963: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2926,12 +2988,12 @@ done
 for ac_func in syslog
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2930: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:2992: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2935 "configure"
+#line 2997 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2940,6 +3002,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -2949,12 +3012,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:2958: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3021: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2985,12 +3048,12 @@ done
 for ac_func in vsprintf vasprintf
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2989: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3052: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2994 "configure"
+#line 3057 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2999,6 +3062,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3008,12 +3072,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3017: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3081: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3042,11 +3106,11 @@ if test $ac_cv_func_vsprintf = yes ; then
   VSPRINTF_RETURNS_LENGTH=1
 else
   cat > conftest.$ac_ext <<EOF
-#line 3046 "configure"
+#line 3110 "configure"
 #include "confdefs.h"
 #include "$srcdir/config/config.vsprintf.c"
 EOF
-if { (eval echo configure:3050: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3114: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   VSPRINTF_RETURNS_LENGTH=1
 else
@@ -3068,11 +3132,11 @@ if test $ac_cv_func_vasprintf = yes ; then
   VASPRINTF_RETURNS_LENGTH=1
 else
   cat > conftest.$ac_ext <<EOF
-#line 3072 "configure"
+#line 3136 "configure"
 #include "confdefs.h"
 #include "$srcdir/config/config.vasprintf.c"
 EOF
-if { (eval echo configure:3076: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3140: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   VASPRINTF_RETURNS_LENGTH=1
 else
@@ -3096,12 +3160,12 @@ fi
 for ac_func in getcwd
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3100: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3164: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3105 "configure"
+#line 3169 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3110,6 +3174,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3119,12 +3184,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3128: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3193: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3153,12 +3218,12 @@ for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr that defines DIR""... $ac_c" 1>&6
-echo "configure:3157: checking for $ac_hdr that defines DIR" >&5
-if eval "test \"`echo '$''{'ac_cv_header_dirent_$ac_safe'+set}'`\" = set"; then
+echo "configure:3222: checking for $ac_hdr that defines DIR" >&5
+if eval "test \"\${ac_cv_header_dirent_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3162 "configure"
+#line 3227 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_hdr>
@@ -3166,7 +3231,7 @@ int main() {
 DIR *dirp = 0;
 ; return 0; }
 EOF
-if { (eval echo configure:3170: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3235: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_header_dirent_$ac_safe=yes"
 else
@@ -3191,15 +3256,15 @@ done
 # Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
 if test $ac_header_dirent = dirent.h; then
 echo $ac_n "checking for opendir in -ldir""... $ac_c" 1>&6
-echo "configure:3195: checking for opendir in -ldir" >&5
-ac_lib_var=`echo dir'_'opendir | sed 'y%./+-%__p_%'`
-if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+echo "configure:3260: checking for opendir in -ldir" >&5
+ac_lib_var=`echo dir'_'opendir | sed 'y%./+-:%__p__%'`
+if eval "test \"\${ac_cv_lib_$ac_lib_var+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-ldir  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3203 "configure"
+#line 3268 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -3210,7 +3275,7 @@ int main() {
 opendir()
 ; return 0; }
 EOF
-if { (eval echo configure:3214: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3279: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -3232,15 +3297,15 @@ fi
 
 else
 echo $ac_n "checking for opendir in -lx""... $ac_c" 1>&6
-echo "configure:3236: checking for opendir in -lx" >&5
-ac_lib_var=`echo x'_'opendir | sed 'y%./+-%__p_%'`
-if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+echo "configure:3301: checking for opendir in -lx" >&5
+ac_lib_var=`echo x'_'opendir | sed 'y%./+-:%__p__%'`
+if eval "test \"\${ac_cv_lib_$ac_lib_var+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-lx  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3244 "configure"
+#line 3309 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -3251,7 +3316,7 @@ int main() {
 opendir()
 ; return 0; }
 EOF
-if { (eval echo configure:3255: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3320: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -3281,17 +3346,17 @@ for ac_hdr in getopt.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:3285: checking for $ac_hdr" >&5
-if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+echo "configure:3350: checking for $ac_hdr" >&5
+if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3290 "configure"
+#line 3355 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3295: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3360: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -3324,12 +3389,12 @@ done
 for ac_func in valloc
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3328: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3393: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3333 "configure"
+#line 3398 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3338,6 +3403,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3347,12 +3413,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3356: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3422: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3383,12 +3449,12 @@ done
 for ac_func in times
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3387: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3453: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3392 "configure"
+#line 3458 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3397,6 +3463,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3406,12 +3473,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3415: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3482: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3442,12 +3509,12 @@ done
 for ac_func in mkstemp
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3446: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3513: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3451 "configure"
+#line 3518 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3456,6 +3523,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3465,12 +3533,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3474: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3542: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3497,12 +3565,12 @@ done
 for ac_func in shmctl
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3501: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3569: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3506 "configure"
+#line 3574 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3511,6 +3579,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3520,12 +3589,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3529: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3598: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3552,12 +3621,12 @@ done
 for ac_func in mmap
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3556: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3625: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3561 "configure"
+#line 3630 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3566,6 +3635,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3575,12 +3645,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3584: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3654: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3607,12 +3677,12 @@ done
 for ac_func in mkstemp
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3611: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3681: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3616 "configure"
+#line 3686 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3621,6 +3691,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3630,12 +3701,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3639: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3710: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3666,12 +3737,12 @@ done
 for ac_func in inet_aton
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3670: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3741: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3675 "configure"
+#line 3746 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3680,6 +3751,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3689,12 +3761,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3698: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3770: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3725,12 +3797,12 @@ done
 for ac_func in killpg setpgrp setpgid
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3729: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3801: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3734 "configure"
+#line 3806 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3739,6 +3811,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3748,12 +3821,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3757: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3830: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3778,15 +3851,15 @@ fi
 done
 
 echo $ac_n "checking whether setpgrp takes no argument""... $ac_c" 1>&6
-echo "configure:3782: checking whether setpgrp takes no argument" >&5
-if eval "test \"`echo '$''{'ac_cv_func_setpgrp_void'+set}'`\" = set"; then
+echo "configure:3855: checking whether setpgrp takes no argument" >&5
+if eval "test \"\${ac_cv_func_setpgrp_void+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
   { echo "configure: error: cannot check setpgrp if cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 3790 "configure"
+#line 3863 "configure"
 #include "confdefs.h"
 
 #ifdef HAVE_UNISTD_H
@@ -3806,7 +3879,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:3810: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3883: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_setpgrp_void=no
 else
@@ -3836,12 +3909,12 @@ fi
 for ac_func in usleep
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3840: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3913: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3845 "configure"
+#line 3918 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3850,6 +3923,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3859,12 +3933,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3868: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3942: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3895,12 +3969,12 @@ done
 for ac_func in strerror
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3899: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:3973: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3904 "configure"
+#line 3978 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3909,6 +3983,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -3918,12 +3993,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3927: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4002: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3952,12 +4027,12 @@ done
 # This function needed by NSString for handling of %@ printf directive.
 #--------------------------------------------------------------------
 echo $ac_n "checking for register_printf_function""... $ac_c" 1>&6
-echo "configure:3956: checking for register_printf_function" >&5
-if eval "test \"`echo '$''{'ac_cv_func_register_printf_function'+set}'`\" = set"; then
+echo "configure:4031: checking for register_printf_function" >&5
+if eval "test \"\${ac_cv_func_register_printf_function+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3961 "configure"
+#line 4036 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char register_printf_function(); below.  */
@@ -3966,6 +4041,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char register_printf_function();
+char (*f)();
 
 int main() {
 
@@ -3975,12 +4051,12 @@ int main() {
 #if defined (__stub_register_printf_function) || defined (__stub___register_printf_function)
 choke me
 #else
-register_printf_function();
+f = register_printf_function;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3984: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4060: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_register_printf_function=yes"
 else
@@ -4005,11 +4081,11 @@ if test $register_printf = 1; then
   working_register_printf=1
 else
   cat > conftest.$ac_ext <<EOF
-#line 4009 "configure"
+#line 4085 "configure"
 #include "confdefs.h"
 #include "$srcdir/config/config.printf.c"
 EOF
-if { (eval echo configure:4013: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4089: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   working_register_printf=1
 else
@@ -4035,12 +4111,12 @@ fi
 for ac_func in realpath
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4039: checking for $ac_func" >&5
-if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+echo "configure:4115: checking for $ac_func" >&5
+if eval "test \"\${ac_cv_func_$ac_func+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4044 "configure"
+#line 4120 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4049,6 +4125,7 @@ else
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
+char (*f)();
 
 int main() {
 
@@ -4058,12 +4135,12 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
-$ac_func();
+f = $ac_func;
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:4067: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4144: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4093,15 +4170,15 @@ done
 # Used in critical cases by NSProcessInfo.m
 #--------------------------------------------------------------------
 echo $ac_n "checking program_invocation_name in C Library""... $ac_c" 1>&6
-echo "configure:4097: checking program_invocation_name in C Library" >&5
-if eval "test \"`echo '$''{'program_invocation_name_worked'+set}'`\" = set"; then
+echo "configure:4174: checking program_invocation_name in C Library" >&5
+if eval "test \"\${program_invocation_name_worked+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
   program_invocation_name_worked=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 4105 "configure"
+#line 4182 "configure"
 #include "confdefs.h"
 
 #include <string.h>
@@ -4113,7 +4190,7 @@ main (int argc, char *argv[])
 }
 
 EOF
-if { (eval echo configure:4117: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4194: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   program_invocation_name_worked=yes
 else
@@ -4142,7 +4219,7 @@ fi
 # Needed by NSProcessInfo.m 
 #--------------------------------------------------------------------
 echo $ac_n "checking kernel support for /proc filesystem""... $ac_c" 1>&6
-echo "configure:4146: checking kernel support for /proc filesystem" >&5
+echo "configure:4223: checking kernel support for /proc filesystem" >&5
 if (grep proc /etc/fstab >/dev/null 2>/dev/null); then 
   sys_proc_fs=yes;
   cat >> confdefs.h <<\EOF
@@ -4165,7 +4242,7 @@ fi
 sys_proc_fs_exe=no;
 if test $sys_proc_fs = yes; then
   echo $ac_n "checking link to executable in /proc""... $ac_c" 1>&6
-echo "configure:4169: checking link to executable in /proc" >&5
+echo "configure:4246: checking link to executable in /proc" >&5
   if test -L /proc/self/exe; then
     sys_proc_fs_exe=yes;
     echo "$ac_t""yes" 1>&6
@@ -4178,16 +4255,16 @@ fi
 # Check if short and int values need to be word aligned
 #--------------------------------------------------------------------
 echo $ac_n "checking short/int needs to be word aligned""... $ac_c" 1>&6
-echo "configure:4182: checking short/int needs to be word aligned" >&5
+echo "configure:4259: checking short/int needs to be word aligned" >&5
 if test "$cross_compiling" = yes; then
   NEED_WORD_ALIGNMENT=1
 else
   cat > conftest.$ac_ext <<EOF
-#line 4187 "configure"
+#line 4264 "configure"
 #include "confdefs.h"
 #include "$srcdir/config/config.align.c"
 EOF
-if { (eval echo configure:4191: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4268: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   NEED_WORD_ALIGNMENT=0
 else
@@ -4348,7 +4425,7 @@ do
     echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
     exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
   -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
-    echo "$CONFIG_STATUS generated by autoconf version 2.13"
+    echo "$CONFIG_STATUS generated by autoconf version 2.13.1"
     exit 0 ;;
   -help | --help | --hel | --he | --h)
     echo "\$ac_cs_usage"; exit 0 ;;
@@ -4656,7 +4733,7 @@ exit 0
 EOF
 chmod +x $CONFIG_STATUS
 rm -fr confdefs* $ac_clean_files
-test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1
+test "$no_create" = yes || $SHELL $CONFIG_STATUS || exit 1
 
 if test "$no_recursion" != yes; then
 
@@ -4720,7 +4797,7 @@ if test "$no_recursion" != yes; then
 
     # Check for guested configure; otherwise get Cygnus style configure.
     if test -f $ac_sub_srcdir/configure; then
-      ac_sub_configure=$ac_sub_srcdir/configure
+      ac_sub_configure="$SHELL $ac_sub_srcdir/configure"
     elif test -f $ac_sub_srcdir/configure.in; then
       ac_sub_configure=$ac_configure
     else
@@ -4738,9 +4815,9 @@ if test "$no_recursion" != yes; then
         ac_sub_cache_file="$ac_dots$cache_file" ;;
       esac
 
-      echo "running ${CONFIG_SHELL-/bin/sh} $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir"
+      echo "running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir"
       # The eval makes quoting arguments work.
-      if eval ${CONFIG_SHELL-/bin/sh} $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir
+      if eval $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir
       then :
       else
         { echo "configure: error: $ac_sub_configure failed for $ac_config_dir" 1>&2; exit 1; }