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/gtk/dialog.h

@@ -46,7 +46,7 @@ private:
     bool m_modalShowing;
     wxGUIEventLoop *m_modalLoop;
 
-    DECLARE_DYNAMIC_CLASS(wxDialog)
+    wxDECLARE_DYNAMIC_CLASS(wxDialog);
 };
 
 #endif // _WX_GTKDIALOG_H_