Merged revisions 168507 via svnmerge from

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

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  r168507 | jpeeler | 2009-01-12 14:26:22 -0600 (Mon, 12 Jan 2009) | 9 lines
  
  (closes issue #12269)
  Reported by: IgorG
  Tested by: denisgalvao
  
  This gits rid of the notion of an owning_app allowing the request and hangup to be initiated by different threads. Originating from an active agent channel requires this. The implementation primarily changes __login_exec to wait on a condition variable rather than a lock.
  
  Review: http://reviewboard.digium.com/r/35/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@168508 65c4cc65-6c06-0410-ace0-fbb531ad65f3