Merged revisions 315446 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.8

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  r315446 | russell | 2011-04-26 12:40:23 -0500 (Tue, 26 Apr 2011) | 14 lines
  
  chan_local: resolve a deadlock.
  
  This patch resolves a fairly complex deadlock that can occur with the
  combination of chan_local and a dialplan switch, such as dynamic realtime
  extensions, which pulls autoservice into the picture when doing a dialplan
  lookup.
  
  (closes issue #18818)
  Reported by: nic
  Patches:
        issue18818.patch uploaded by jthurman (license 614)
        18818.v1.txt uploaded by russell (license 2)
  Tested by: nic, jthurman, kterzi, steve-howes, sysreq, IshMalik
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@315447 65c4cc65-6c06-0410-ace0-fbb531ad65f3