Merged revisions 168128 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r168128 | mmichelson | 2009-01-09 14:08:04 -0600 (Fri, 09 Jan 2009) | 13 lines

Add check_via calls to more request handlers

INFO, NOTIFY, OPTIONS, REFER, and MESSAGE requests
were not checking the topmost Via to determine where
to send the response. Adding check_via calls to those
request handlers solves this.

(closes issue #13071)
Reported by: baron
Patches:
      check_via.patch uploaded by baron (license 531)
Tested by: baron

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@168193 65c4cc65-6c06-0410-ace0-fbb531ad65f3