Merged revisions 333681 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/10

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  r333681 | twilson | 2011-08-29 12:28:59 -0500 (Mon, 29 Aug 2011) | 7 lines
  
  Use realtime text when it is negotiated
  
  This patch make use of wirte_text() realtime text instead of
  send_text() if T.140 is in native formats. ASTERISK-17937
  
  Review: https://reviewboard.asterisk.org/r/1356/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@333689 65c4cc65-6c06-0410-ace0-fbb531ad65f3