Add tests for XShape extension API in configure,

and implements wxTLW::SetShape for wxMotif and wxX11
using the aforementioned extension.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20102 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/motif/toplevel.h

@@ -60,6 +60,8 @@ public:
                                int maxW = -1, int maxH = -1,
                                int incW = -1, int incH = -1 );
 
+    virtual bool SetShape( const wxRegion& region );
+
     WXWidget GetShellWidget() const;
 protected:
     // common part of all constructors