Merged revisions 7513 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

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r7513 | kpfleming | 2005-12-16 21:44:30 -0600 (Fri, 16 Dec 2005) | 2 lines

forcibly expire previous subscriptions from a peer when they resubscribe (keeps them from building up and waiting for expiration, and stops us sending unwanted NOTIFY messages to devices)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7514 65c4cc65-6c06-0410-ace0-fbb531ad65f3