wxSpinCtrl no longer emits event when changed programmatically.

Some GUI thread things and tests,
  Change for borders around cmposite controls.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5173 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/spinctrl.h

@@ -65,6 +65,8 @@ public:
     
     bool IsOwnGtkWindow( GdkWindow *window );
     void ApplyWidgetStyle();
+    void GtkDisableEvents();
+    void GtkEnableEvents();
 
     GtkAdjustment  *m_adjust;
     float           m_oldPos;