Do proper cleanup of event handlers in wxWebKitCtrl and wxMacUnicodeTextCtrl, and unset the window focus when destroying a top level window to ensure that controls do not receive events after the wx portion of the control has been destroyed.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@56767 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/toplevel.h

@@ -48,6 +48,8 @@ public:
                 const wxString& name = wxFrameNameStr);
 
     virtual ~wxTopLevelWindowMac();
+    
+    virtual bool Destroy();
 
     virtual wxPoint GetClientAreaOrigin() const;