4. Added 'catchup' command which will 'catchup' messages to date for a node.
This means that when you start forwarding to a node, it doesn't get all the
messages queued up that are probably old.
+5. added 'uncatchup' which does the opposite of the above.
+6. fixed kill full and PC49 handling so that it actually works.
21Jun99=======================================================================
1. changed regex for cluster->client msgs so that strings like |---| are no
longer ignored.