[RFC] : Is that an heresy to add a user header to messages in outbox

[Emmanuel <e allaud wanadoo fr>]

	Hi all,
to implement the correct fccbox behaviour I have to keep track of the 
fccbox the user has chosen because now we do not copy to fccbox on 
queueing, we do it later when sending is completed. I think it's OK (as 
long as I find the way to remove this extra header before sending).
Bye
Manu