Merged revisions 286756 via svnmerge from

Merged revisions 286756 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r286756 | mnicholson | 2010-09-14 14:26:18 -0500 (Tue, 14 Sep 2010) | 13 lines

  Don't clear the username from a realtime database when a registration expires.

  Non-realtime chan_sip does not clear the username from memory when a registration expiries so realtime probably shouldn't either.

  (closes issue #17551)
  Reported by: ricardolandim
  Patches:
        reg-expiry-username-1.4-fix1.diff uploaded by mnicholson (license 96)
        reg-expiry-username-1.6.2-fix1.diff uploaded by mnicholson (license 96)
        reg-expiry-username-1.8-fix1.diff uploaded by mnicholson (license 96)
        reg-expiry-username-trunk-fix1.diff uploaded by mnicholson (license 96)
  Tested by: ricardolandim, mnicholson
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@286757 65c4cc65-6c06-0410-ace0-fbb531ad65f3