Update copyright year

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73416 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Interface change: long --> wxCoord in GetPosition.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73417 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775