Merged revisions 376660 via svnmerge from

file:///srv/subversion/repos/asterisk/trunk

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  r376660 | rmudgett | 2012-11-27 14:39:51 -0600 (Tue, 27 Nov 2012) | 27 lines
  
  Remove unnecessary channel module references.
  
  * Removed call to ast_module_user_hangup_all() in res_config_mysql.c since
  it is effectively a noop.  No channels can attach a reference to that
  module.
  
  * Removed call to ast_module_user_hangup_all() in app_celgenuserevent.c.
  The caller of unload_module() has already called it.
  
  * Removed redundant channel module references in pbx_dundi.c.  The
  registered dialplan function callback dispatchers for the read/read2/write
  callbacks already reference the module before calling.
  
  * pbx_dundi: Moved unregistering CLI commands, DUNDi switch, and dialplan
  functions to the first thing the unload_module() does.  This will reduce
  the chance of new channels using DUNDi services while the module is being
  torn down.
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  Merged revisions 376657 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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  Merged revisions 376658 from http://svn.asterisk.org/svn/asterisk/branches/10
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  Merged revisions 376659 from http://svn.asterisk.org/svn/asterisk/branches/11
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git-svn-id: https://origsvn.digium.com/svn/asterisk/team/mmichelson/threadpool@376667 65c4cc65-6c06-0410-ace0-fbb531ad65f3