Additional option for videosupport (always) that disables the optimization to

fail to setup video RTP if the two endpoints will not support it.  This assists
with call files and certain transfers to ensure that if two video phones are
ever connected, they will always share a video feed.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@130951 65c4cc65-6c06-0410-ace0-fbb531ad65f3