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/motif/msgdlg.h

@@ -37,7 +37,7 @@ public:
 protected:
     long        m_result;
 
-    DECLARE_DYNAMIC_CLASS(wxMessageDialog)
+    wxDECLARE_DYNAMIC_CLASS(wxMessageDialog);
 };
 
 #endif // _WX_MSGBOXDLG_H_