Merged revisions 205728 via svn merge from

Merged revisions 205728 via svn merge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r205728 | rmudgett | 2009-07-09 18:37:53 -0500 (Thu, 09 Jul 2009) | 21 lines

  No audio on calls from Asterisk to various ISDN devices until DTMF sent by caller.

  Add missing clearing of the dialing flag when the ISDN call is CONNECTED.
  (i.e. When libpri generates the event PRI_EVENT_ANSWER.)

  (closes issue #15420)
  Reported by: scottbmilne
  Patches:
        bug15420-1.4.25.1-diff2.txt uploaded by alecdavis (license 585)
  Tested by: scottbmilne, alecdavis

  (closes issue #15416)
  Reported by: avinoash

  (closes issue #15389)
  Reported by: alecdavis

  This patch should also fix the following issue:
  (issue #15205)
  Reported by: vinsik
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@205730 65c4cc65-6c06-0410-ace0-fbb531ad65f3