Merged revisions 232660-232661 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

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  r232660 | tilghman | 2009-12-02 18:08:55 -0600 (Wed, 02 Dec 2009) | 19 lines
  
  Fix multiple issues with musiconhold, which led to classes not getting destroyed properly.
   * Classes are now tracked past removal from the core container, and module
     removal is actively prevented until all references are freed.
   * A hanging reference stored in the channel has been removed.  This could have
     caused a mismatch and the music state not properly cleared, if two or more
     reloads occurred between MOH being stopped and MOH being restarted.
   * In certain circumstances, duplicate classes were possible.
   * A race existed at reload time between a process being killed and the thread
     responsible for reading from the related pipe respawning that process.
   * Several reference counts have also been corrected.  At least one could have
     caused deleted classes to stick around forever, consuming resources.  This
     originally manifested as MOH external processes that were not killed at
     reload time.
  (closes issue #16279, closes issue #16207)
   Reported by: parisioa, dcabot
   Patches: 
         20091202__issue16279__2.diff.txt uploaded by tilghman (license 14)
   Tested by: parisioa, tilghman
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  r232661 | tilghman | 2009-12-02 18:09:36 -0600 (Wed, 02 Dec 2009) | 2 lines
  
  Remove debugging line
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git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.0@232699 f38db490-d61c-443f-a65b-d21fe96a405b

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