Class cluster and encoding/decoding fixes.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@7825 72102866-910b-0410-8b05-ffd578937521

Source/NSArray.m

@@ -137,6 +137,11 @@ static SEL	rlSel = @selector(removeLastObject);
 
 /* The NSCoding Protocol */
 
+- (Class) classForCoder
+{
+  return NSArray_abstract_class;
+}
+
 - (void) encodeWithCoder: (NSCoder*)aCoder
 {
   unsigned	count = [self count];
@@ -802,6 +807,11 @@ static NSString	*indentStrings[] = {
     }
 }
 
+- (Class) classForCoder
+{
+  return NSMutableArray_abstract_class;
+}
+
 /* The NSCopying Protocol */
 
 - (id) copyWithZone: (NSZone*)zone