Require authentication to do a force build

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@74453 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Change the XPM string literals to bytes literals.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@74454 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775