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/msw/helpbest.h

@@ -118,7 +118,7 @@ protected:
     wxHelpControllerBase* m_helpController;
     int m_style;
 
-    DECLARE_DYNAMIC_CLASS(wxBestHelpController)
+    wxDECLARE_DYNAMIC_CLASS(wxBestHelpController);
     wxDECLARE_NO_COPY_CLASS(wxBestHelpController);
 };