reasons that stattext was created, so it could be mouse sensitive on
all platforms like normal windows. Also updated stattext.py and
buttons.py to handle attribute (font & colour) defaults and
inheritance the new way.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27278 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775