Merged revisions 230508 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r230508 | dvossel | 2009-11-19 15:22:46 -0600 (Thu, 19 Nov 2009) | 10 lines
  
  fixes MixMonitor thread not exiting when StopMixMonitor is used
  
  (closes issue #16152)
  Reported by: AlexMS
  Patches:
        stopmixmonitor_1.4.diff uploaded by dvossel (license 671)
  Tested by: dvossel, AlexMS
  
  Review: https://reviewboard.asterisk.org/r/424/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@230509 65c4cc65-6c06-0410-ace0-fbb531ad65f3