Add CHANNELREDIRECT_STATUS variable to ChannelRedirect() dialplan application. This...

Add CHANNELREDIRECT_STATUS variable to ChannelRedirect() dialplan application. This will either be set to NOCHANNEL if the given channel was not found or SUCCESS if it worked.
(closes issue #11553)
Reported by: johan
Patches:
      UPGRADE.txt.channelredirect.patch uploaded by johan (license 334)
      CHANGES.channelredirect.patch uploaded by johan (license 334)
      app_channelredirect-20080219.patch uploaded by johan (license 334)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@103819 65c4cc65-6c06-0410-ace0-fbb531ad65f3