Don't set timer in Request.send() if it wasn't specified

darcs-hash:20090506173906-58103-f79c72b77a78e819c6f85dcd73cb3ab1e7a6edd8
Added timeout argument to Invitation.disconnect()

darcs-hash:20090506173951-58103-9153e29bf7debe7535b64b8ceceaf70ed1e8cab3