Use wx-prefixed macros throughout the repository.

Change {DECLARE,IMPLEMENT}_*CLASS and {DECLARE,BEGIN,END}_EVENT_TABLE
occurrences to use the wx-prefixed version of the macros.

include/wx/univ/button.h

@@ -105,7 +105,7 @@ protected:
     void Init();
 
 private:
-    DECLARE_DYNAMIC_CLASS(wxButton)
+    wxDECLARE_DYNAMIC_CLASS(wxButton);
 };
 
 #endif // _WX_UNIV_BUTTON_H_