This commit contains several changes to the way output channel variables are handled.

FAX output channel variables will now match the values reported by FAXOPT() and should be set in all failure and success cases.

This commit also contains a few modifications to the way FAXOPT() variables are populated in a few spots and fixes for some reference count leaks of the session details structure in some failure cases.

Also found and fixed more cases where FAXOPT(status) may not have gotten set.

FAX-214
FAX-203


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@278168 65c4cc65-6c06-0410-ace0-fbb531ad65f3