Fix a problem where owner, firstResponder and application

were put in the list of top-level objects, creating a retain-cycle.  Fix a problem where view and window controllers did not release
their top-level objects as expected.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/branches/gnustep_testplant_branch@36127 72102866-910b-0410-8b05-ffd578937521

Source/NSViewController.m

@@ -27,6 +27,7 @@
 
 #import <Foundation/NSBundle.h>
 #import <Foundation/NSString.h>
+#import <Foundation/NSArray.h>
 #import "AppKit/NSKeyValueBinding.h"
 #import "AppKit/NSNib.h"
 #import "AppKit/NSViewController.h"
@@ -49,6 +50,10 @@
 
 - (void) dealloc
 {
+  // View Controllers are expect to release their own top-level objects
+  // https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/LoadingResources/CocoaNibs/CocoaNibs.html 
+  [_topLevelObjects makeObjectsPerformSelector:@selector(release)];
+
   DESTROY(_nibName);
   DESTROY(_nibBundle);
   DESTROY(_representedObject);