Fixed optical bug in wxListCtrl,

Added dnd.wxr to install script,
  Fixed two problems in wxGLCanvas.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4475 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/glcanvas/gtk/glcanvas.h

@@ -132,6 +132,7 @@ public:
   
     wxGLContext      *m_glContext,
                      *m_sharedContext;
+    void             *m_vi;
     GtkWidget        *m_glWidget;
     bool              m_exposed;