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/effects.h

@@ -74,7 +74,7 @@ protected:
     wxColour    m_mediumShadow;     // Usually dark grey
     wxColour    m_darkShadow;       // Usually black
 
-    DECLARE_CLASS(wxEffectsImpl)
+    wxDECLARE_CLASS(wxEffectsImpl);
 };
 
 // current versions of g++ don't generate deprecation warnings for classes