Improve accuracy of identifying information sent in dialog-info SIP NOTIFY requests.

This change makes use of connected party information in addition to caller ID in order
to populate local and remote XML elements in the dialog-info NOTIFYs.

(closes issue ASTERISK-16735)
Reported by: Maciej Krajewski
Tested by: Maciej Krajewski
Patches:
    local_remote_hint2.diff uploaded by Mark Michelson (license 5049)
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Merged revisions 360862 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 360863 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@360872 65c4cc65-6c06-0410-ace0-fbb531ad65f3