fix race in codec failure condition, then fix bug in sdp parsing (likely a regression from recent codec changes) to never have the problem in the first place so you are double-protected

skypopen: manage ERROR 36 Not online, cosmetics, put the interface DOWN when no session and when beginning to destroy

add fwd and rev message scroll keys as default and return to same message when doing a message forward

add fwd and rev message scroll keys as default and return to same message when doing a message forward