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.

src/dfb/dcscreen.cpp

@@ -58,7 +58,7 @@
 //        The surface, as obtained from GetPrimarySurface(), is double-buffered
 //        for the sole purpose of silencing the warning from 3) above.
 
-IMPLEMENT_ABSTRACT_CLASS(wxScreenDCImpl, wxDFBDCImpl)
+wxIMPLEMENT_ABSTRACT_CLASS(wxScreenDCImpl, wxDFBDCImpl);
 
 wxScreenDCImpl::wxScreenDCImpl(wxScreenDC *owner)
               : wxDFBDCImpl(owner)