only put session pointers in when its done from a codec that comes from a session and set it to the right one

FS-3473: --resolve do not use asm optimizations on newer broken apple compiler until we can figure out the correct fix for this

                        pointer that was still in use

                        since this is a valid code path

                        Destroy the peer before the master channel

PROGRESS without PROGRESS INDICATOR IE is invalid according to Q.931,
so always call pri_progress() with info flag set, even if we do not
have media yet.
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>