Jason Evans 7034e6baa1 Enable mutex witnesses even when !isthreaded.
This fixes interactions with witness_assert_depth[_to_rank](), which was
added in dad74bd3c811ca2b1af1fd57b28f2456da5ba08b (Convert
witness_assert_lockless() to witness_assert_lock_depth().).
2017-02-23 10:08:42 -08:00
..
2016-02-29 10:45:49 -08:00