deprecate confusing extension in favour of simpler ARC-complient method

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@39520 72102866-910b-0410-8b05-ffd578937521

Source/GSArray.m

@@ -325,6 +325,11 @@ static Class	GSInlineArrayClass;
   return nil;
 }
 
+- (BOOL) makeImmutable
+{
+  return YES;
+}
+
 - (id) objectAtIndex: (NSUInteger)index
 {
   if (index >= _count)
@@ -632,6 +637,12 @@ static Class	GSInlineArrayClass;
   _version++;
 }
 
+- (BOOL) makeImmutable
+{
+  GSClassSwizzle(self, [GSArray class]);
+  return YES;
+}
+
 - (id) makeImmutableCopyOnFail: (BOOL)force
 {
   GSClassSwizzle(self, [GSArray class]);
@@ -1154,6 +1165,7 @@ static Class	GSInlineArrayClass;
     }
   return index;
 }
+
 @end
 
 @implementation	GSPlaceholderArray