Merged revisions 215522 via svnmerge from

Merged revisions 215522 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

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  r215522 | dvossel | 2009-09-02 12:26:40 -0500 (Wed, 02 Sep 2009) | 11 lines

  SIP uri parsing cleanup

  Now, the scheme passed to parse_uri can either be a
  single scheme, or a list of schemes ',' delimited.
  This gets rid of the whole problem of having to create
  two buffers and calling parse_uri twice to check for
  separate schemes.

  Review: https://reviewboard.asterisk.org/r/343/
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