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/gtk1/dcscreen.h

@@ -31,7 +31,7 @@ protected:
     virtual void DoGetSize(int *width, int *height) const;
 
 private:
-    DECLARE_DYNAMIC_CLASS(wxScreenDCImpl)
+    wxDECLARE_DYNAMIC_CLASS(wxScreenDCImpl);
 };
 
 #endif // __GTKDCSCREENH__