Add setvar support to chan_zap. Just like you can in chan_sip and chan_iax2...

Add setvar support to chan_zap. Just like you can in chan_sip and chan_iax2 you can now use it with zaptel channels. (done while in Montreal at the Asterisk bootcamp!)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@82329 65c4cc65-6c06-0410-ace0-fbb531ad65f3