Adding new configuration options to app_queue. This adds two new values

to announce-position, "limit" and "more," as well as a new option, 
announce-position-limit. For more information on the use of these options,
see CHANGES or configs/queues.conf.sample.

(closes issue #10991)
Reported by: slavon
Patches:
      app_q.diff uploaded by slavon (license 288)
Tested by: slavon, putnopvut



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@114906 65c4cc65-6c06-0410-ace0-fbb531ad65f3