Support more than just mingw cross compiling.

This is the beginnings of android support :)

tools/cross/droid/arm-linux-androideabi-pkg-config

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# This file has no copyright assigned and is placed in the Public Domain.
+# No warranty is given.
+
+# When using the android cross compiler tools, the native Linux
+# pkg-config executable works fine as long as the default PKG_CONFIG_LIBDIR
+# is overridden.
+export PKG_CONFIG_LIBDIR=$ANDROID_SYSROOT
+
+# Also want to override the standard user defined PKG_CONFIG_PATH with
+# a android specific one.
+export PKG_CONFIG_PATH=$PKG_CONFIG_PATH_ANDROID
+
+# Now just execute pkg-config with the given command line args.
+pkg-config $@

tools/cross/droid/cross-configure.sh

@@ -0,0 +1,10 @@
+#!/bin/sh -x
+export ANDROID_NDK_ROOT=/home/bill/Downloads/android-ndk-r7
+export ANDROID_SYSROOT=$ANDROID_NDK_ROOT/android-14-toolchain/sysroot
+export PATH=$ANDROID_NDK_ROOT/android-14-toolchain/bin:$PATH
+../configure \
+	--build=x86_64-unknown-linux-gnu \
+	--with-sysroot=$ANDROID_SYSROOT \
+	--host=arm-linux-androideabi --with-endian=little \
+	$*
+

tools/cross/droid/cross-make.sh

@@ -0,0 +1,8 @@
+#!/bin/sh -x
+HOST_CC=gcc
+export HOST_CC
+ANDROID_NDK_ROOT=/home/bill/Downloads/android-ndk-r7
+export PATH=$ANDROID_NDK_ROOT/android-14-toolchain/bin:$PATH
+
+make PAK=pak QFCC=qfcc $*
+