Locking order in app_queue.c causes deadlocks.

Locking order in app_queue.c causes deadlocks.

a channel lock must never be held with the queues container lock held.

the deadlock occured on masquerade.

the queues container lock is a relic of the past the old queue module lock.
with ao2 there is no need to hold this lock when dealing with members this
patch removes unneeded locks.

(closes issue ASTERISK-18101)
(closes issue ASTERISK-18487)
Reported by: Paul Rolfe, Jason Legault
Tested by: irroot, Jason Legault, Paul Rolfe
Reviewed by: Matthew Nicholson

Review: https://reviewboard.asterisk.org/r/1402/

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@336093 65c4cc65-6c06-0410-ace0-fbb531ad65f3