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/menu.h

@@ -55,7 +55,7 @@ private:
 
     GtkWidget* m_menubar;
 
-    DECLARE_DYNAMIC_CLASS(wxMenuBar)
+    wxDECLARE_DYNAMIC_CLASS(wxMenuBar);
 };
 
 //-----------------------------------------------------------------------------
@@ -103,7 +103,7 @@ private:
     void GtkAppend(wxMenuItem* item, int pos = -1);
 
 
-    DECLARE_DYNAMIC_CLASS(wxMenu)
+    wxDECLARE_DYNAMIC_CLASS(wxMenu);
 };
 
 #endif