Merged revisions 260434 via svnmerge from

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

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  r260434 | jpeeler | 2010-04-30 17:22:46 -0500 (Fri, 30 Apr 2010) | 11 lines
  
  Ensure channel state is not incorrectly set in the case of a very early answer.
  
  The needringing bit was being read in dahdi_read after answering thereby
  setting the state to ringing from up. This clears needringing upon answering
  so that is no longer possible.
  
  (closes issue #17067)
  Reported by: tzafrir
  Patches: 
        needringing.diff uploaded by tzafrir (license 46)
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