Merged revisions 173696 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r173696 | jpeeler | 2009-02-05 14:47:51 -0600 (Thu, 05 Feb 2009) | 12 lines
  
  Add new configuration option to make shared IMAP mailboxes function as expected.
  
  The new option is "imapvmshareid" which is an ID to tag multiple mailboxes
  using the same IMAP storage location to function as one mailbox. This allows
  all messages to be retrieved for any user in the group. The patch alters the
  'X-Asterisk-VM-Extension' header that is responsible for matching voicemails
  for a given user.
  
  (closes issue #13673)
  Reported by: howardwilkinson
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@173697 65c4cc65-6c06-0410-ace0-fbb531ad65f3