K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2017-02-05T09:35:17.111271Z
K 7
svn:log
V 166
mtx: fix up _mtx_obtain_lock_fetch usage in thread lock

Since _mtx_obtain_lock_fetch no longer sets the argument to MTX_UNOWNED,
callers have to do it on their own.

END