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/dcsvg.h

@@ -242,7 +242,7 @@ private:
    // incremented in each SetClippingRegion() call.
    size_t m_clipUniqueId;
 
-   DECLARE_ABSTRACT_CLASS(wxSVGFileDCImpl)
+   wxDECLARE_ABSTRACT_CLASS(wxSVGFileDCImpl);
 };