Add a min-announce-frequency option to queues.conf which allows you to control the

minimum amount of time between queue announcements for use when the caller's queue
position changes frequently.
(issue #9604, patch by Matthew Roth)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@62242 65c4cc65-6c06-0410-ace0-fbb531ad65f3