1) added wxFrame support to wxrcedit

2) fixes to wxrcedit so that generated files are compatible with new XRC
(both in patch #648659)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18379 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

contrib/utils/wxrcedit/preview.h

@@ -43,6 +43,7 @@ class PreviewFrame : public wxFrame
         void PreviewMenu();
         void PreviewToolbar();
         void PreviewPanel();
+		void PreviewWXFrame();
     
     private:
         static PreviewFrame *ms_Instance;