although I changed msw files also, so please wait until this evening if you
want to be sure that it compiles. This change should fix 64 bit compilation
problems, but it would be nice to test it...
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@591 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775