wxMGL compilation fixes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23657 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mgl/app.h

@@ -46,7 +46,9 @@ public:
 
     virtual bool Initialize(int& argc, wxChar **argv);
     virtual void CleanUp();
-
+    
+    virtual void Exit();
+    virtual void WakeUpIdle();
     virtual bool Yield(bool onlyIfNeeded = FALSE);
 
     virtual wxDisplayModeInfo GetDisplayMode() const { return m_displayMode; }