Merged revisions 206702 via svnmerge from

Merged revisions 206702 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

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  r206702 | dvossel | 2009-07-15 15:20:01 -0500 (Wed, 15 Jul 2009) | 10 lines

  callerid(num) is wrong when username is missing

  A domain only sip uri <sip:123.123.123.123> would return
  123.123.123.123 as callid num.  Now, if the username is
  missing from a uri, the callerid num field is left empty.

  (closes issue #15476)
  Reported by: viraptor
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@206704 65c4cc65-6c06-0410-ace0-fbb531ad65f3