Merged revisions 376658 via svnmerge from

Merged revisions 376658 via svnmerge from
file:///srv/subversion/repos/asterisk/branches/10

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  r376658 | rmudgett | 2012-11-27 14:36:45 -0600 (Tue, 27 Nov 2012) | 21 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.
  ........

  Merged revisions 376657 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10-digiumphones@376686 65c4cc65-6c06-0410-ace0-fbb531ad65f3