Merged revisions 288079-288080 via svnmerge from

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

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  r288079 | rmudgett | 2010-09-21 15:29:51 -0500 (Tue, 21 Sep 2010) | 2 lines
  
  Protect channel access in CONNECTED_LINE and REDIRECTING interception macro launch code.
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  r288080 | rmudgett | 2010-09-21 15:29:59 -0500 (Tue, 21 Sep 2010) | 8 lines
  
  Simplify locking code for REDIRECTING interception macro when forwarding a call.
  
  Simplified the locking code by using a local copy of the redirecting party
  information in app_dial.c:do_forward() and app_queue.c:wait_for_answer()
  for launching the REDIRECTING interception macro when a call is forwarded.
  
  Reduced the lock time of the 'o->chan' and 'in' channels.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@288081 65c4cc65-6c06-0410-ace0-fbb531ad65f3