git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39520 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fixes #324960, enabling config.py to handle in tree builds without tainting build_options.py used for (later) install to some other location. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36405 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775