Adds setting of mwi_from field to check_auth_result check_peer_ok

(closes ASTERISK-19057)
Reported By: Yuri
Patches: 348360chan_sip.diff uploaded by Yuri (license 5242)
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Merged revisions 351759 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 351762 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@351764 65c4cc65-6c06-0410-ace0-fbb531ad65f3