Merged revisions 91780 via svnmerge from

Merged revisions 91780 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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r91780 | russell | 2007-12-07 10:25:25 -0600 (Fri, 07 Dec 2007) | 7 lines

* Add channel locking around datastore operations that expect the channel
  to be locked.
* Document why we don't record Local channels in the dialed interfaces list.
* Handle memory allocation failure.
* Remove the dialed variable, as it wasn't actually needed.
* Tweak some formatting to conform to coding guidelines.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@91781 65c4cc65-6c06-0410-ace0-fbb531ad65f3