3. added update_sysop.pl which cleans out all previous versions of the sysops
information from the user database and recreates it with that in DXVars.pm
4. Added node type to links and who
+5. Hardened up the cluster->client link in the cluster software so that
+rubbish on port 27754 doesn't (usually) crash the cluster.
14Jun00=======================================================================
1. fixed sh/node crash
2. fixed RTT in who.pl