Allow different socket and signalling ip on h.323 connection if gk mode is active

Reported by: Gabriele Odone
Patches:
	ASTERISK-22738-1.patch
Tested by: Gabriele Odone


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@408312 65c4cc65-6c06-0410-ace0-fbb531ad65f3