Changes needed to help builder.py be more generic and working well with other modules

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73855 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add wxEVT_DIRCTRL_CHANGED

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73856 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775