added wxSystemSettings::HasFrameDecorations (anybody knows a better name?)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11773 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/settings.h

@@ -35,6 +35,9 @@ public:
 
     // Get a system metric, e.g. scrollbar size
     static int         GetSystemMetric(int index);
+
+    // Return true if the port can draw frame titlebar (i.e. doesn't need wxUniv for it)
+    static bool        HasFrameDecorations() { return TRUE; }
 };
 
 #endif