6742850: Antialiasing for GTK L&F should be turned on by default if there is no embedded bitmap.

Reviewed-by: peterz

src/share/classes/com/sun/java/swing/plaf/gtk/GTKLookAndFeel.java

 /*
- * Copyright 2002-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2002-2009 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -139,7 +139,7 @@ public class GTKLookAndFeel extends SynthLookAndFeel {
                                     });
                     isSunDesktop = val.booleanValue();
             }
-            if (isSunDesktop) {
+            if (isSunDesktop && !sun.java2d.SunGraphicsEnvironment.isOpenSolaris) {
                 isSunCJK = true;
             }
         }