Fix regression in ad7d920
GetMenuStyleHandle(MenuStyle_Radio) crashes games, which don't support
the radio menu style. The style is never added to the menu manager, if
it's not supported, so GetMenuStyleHandle tries to call IsSupported on a
nullptr
Various minor things done to project files
Updated sample extension project file and updated makefile to the new unified version (more changes likely on the way)
Updated regex project file and makefile
--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401971