data in Python source code, and the generated code now uses streams to
convert the image data to wxImage, wxBitmap, or wxIcon.
A few other changes to match recent additions to CVS.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14416 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
