Correct RPID parsing for unquoted display-name.

Parsing Remote-Party-ID will now succeed if display-name is of the
*(token LWS) kind and not just the quoted-string kind.

Review: https://reviewboard.asterisk.org/r/2341/
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Merged revisions 382107 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 382108 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@382109 65c4cc65-6c06-0410-ace0-fbb531ad65f3