Recovering from in-bracket failures

When a session has failed while in-brackets, it might be necessary to restart the failed bracket when the session is restarted.

The bracket state manager and the half-duplex reset flags in the bind can be set in either the BIND request or the negotiable bind response by either half session. These flags are set to in-brackets/SEND or RECEIVE to indicate the possibility that the process previously attached must be restarted.