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.

tests/benchmarks/graphics.cpp

@@ -537,4 +537,4 @@ public:
     }
 };
 
-IMPLEMENT_APP_CONSOLE(GraphicsBenchmarkApp)
+wxIMPLEMENT_APP_CONSOLE(GraphicsBenchmarkApp);