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/drawing/drawing.h

@@ -176,7 +176,7 @@ private:
 
     wxVector<PluginInfo> m_drawingPlugins;
 
-    DECLARE_NO_COPY_CLASS(GraphicsContextDrawingTestCase)
+    wxDECLARE_NO_COPY_CLASS(GraphicsContextDrawingTestCase);
 };