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/qt/ctrlsub.h

@@ -16,7 +16,7 @@ public:
 protected:
 
 private:
-    DECLARE_ABSTRACT_CLASS(wxControlWithItems)
+    wxDECLARE_ABSTRACT_CLASS(wxControlWithItems);
 };
 
 #endif // _WX_QT_CTRLSUB_H_