Some code optimizations.

* Made more places use pri_queue_control() instead of pri_queue_frame()
and a local frame variable.

* Made pri_queue_frame() use sig_pri_lock_owner().  pri_queue_frame() no
longer releases the libpri access lock unless it is required.

* Made the pri_queue_frame() and pri_queue_control() parameter list
similar to sig_pri_lock_owner().


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@261822 65c4cc65-6c06-0410-ace0-fbb531ad65f3