AGW on Classic: apply patch from Werner to `SuperToolTip` to allow showing an horizontal line even in the middle of the window.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73457 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
AGW on Phoenix: apply patch from Werner to `SuperToolTip` to allow showing an horizontal line even in the middle of the window.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73458 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775