macosx: fix compatibility header for compilation on 10.6

modules/gui/macosx/CompatibilityFixes.h

@@ -44,6 +44,15 @@ enum {
     NSApplicationPresentationAutoHideToolbar            = (1 << 11)
 };
 
+enum {
+    NSWindowAnimationBehaviorDefault = 0,       // let AppKit infer animation behavior for this window
+    NSWindowAnimationBehaviorNone = 2,          // suppress inferred animations (don't animate)
+    NSWindowAnimationBehaviorDocumentWindow = 3,
+    NSWindowAnimationBehaviorUtilityWindow = 4,
+    NSWindowAnimationBehaviorAlertPanel = 5
+};
+typedef NSInteger NSWindowAnimationBehavior;
+
 /* the following is just to fix warnings, not for implementation! */
 @interface NSWindow (IntroducedInLion)
 - (void)setRestorable:(BOOL)b_value;
@@ -51,6 +60,7 @@ enum {
 - (void)windowWillEnterFullScreen:(NSNotification *)notification;
 - (void)windowDidEnterFullScreen:(NSNotification *)notification;
 - (void)windowWillExitFullScreen:(NSNotification *)notification;
+- (void)setAnimationBehavior:(NSWindowAnimationBehavior)newAnimationBehavior;
 @end
 
 @interface NSEvent (IntroducedInLion)