Use built-in parsing functions for Contact and Record-Route headers.

If a Contact or a Record-Route header had a quoted string with an
item in angle brackets, then we would mis-parse it. For instance,
"Bob <1234>" <1234@example.org>
would be misparsed as having the URI "1234"
The fix for this is to use parsing functions from reqresp_parser.h
since they are heavily tested and are awesome.

(issue ASTERISK-18990)
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Merged revisions 351284 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 351286 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@351288 65c4cc65-6c06-0410-ace0-fbb531ad65f3