o Activate link-level CCPs in multilink mode, by bringing them
into the ST_STOPPED state.
o Allow an optional ccp|lcp argument to `down'. The default is
still lcp (as before). You can now call down with no context in multilink mode, in which case it'll down the multilink ccp or the entire bundle (*very* rude).
o Allow an optional !' after close ccp' (close ccp!) to tell
ccp to stay in the CLOSED state after the terminate ACK. The default is now to re-enter STOPPED so that the peer can bring the layer back up if desired.
o Always handle proto-compressed packets, even if we've agreed
(in LCP) that the peer will not send us 1 byte protocols. If the peer violates the LCP agreement, log it to the HDLC log.
o Fix some comments.