extracted common initialization/cleanup functions in common/init.cpp; standardized wxEntry()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21518 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mgl/app.h

@@ -54,10 +54,8 @@ public:
     bool SendIdleEvents();
     bool SendIdleEvents(wxWindow* win);
 
-    static bool Initialize();
-    static void CleanUp();
-
-    void DeletePendingObjects();
+    virtual bool Initialize(int argc, wxChar **argv);
+    virtual void CleanUp();
 
     virtual bool Yield(bool onlyIfNeeded = FALSE);