turn on gobject-introspection.


git-svn-id: http://svn.midnightbsd.org/svn/mports@15578 c872e0db-cc11-e311-ab8b-002590791c19
do not enable shells by default


git-svn-id: http://svn.midnightbsd.org/svn/mports@15579 c872e0db-cc11-e311-ab8b-002590791c19
enable pkgconfig


git-svn-id: http://svn.midnightbsd.org/svn/mports@15580 c872e0db-cc11-e311-ab8b-002590791c19