add db_language support on label_db.c

The attached patch add support db_language object class
to the selabel_lookup(_raw) interfaces.
It is needed to inform object manager initial label of
procedural language object.

Thanks,
--
KaiGai Kohei <kaigai@ak.jp.nec.com>

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2 files changed