Merged revisions 293194 via svnmerge from

Merged revisions 293194 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r293194 | tilghman | 2010-10-28 14:44:37 -0500 (Thu, 28 Oct 2010) | 5 lines

  "!00" evaluated as false, which is incorrect.  Fixing.

  Reported (though the reporter did not understand he was reporting a bug) on the asterisk-users list:
  http://lists.digium.com/pipermail/asterisk-users/2010-October/255505.html
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@293195 65c4cc65-6c06-0410-ace0-fbb531ad65f3