
* allow netgroups in clients list
* external descriptor file for path normalization 
* ignore short idle time if nobody logged in on console
	-- problematic because console isn't always used when machine is in
	   use, e.g., if running XDM.
* dependency cycles need to be handled more gracefully (by dropping
  dependencies as make and gnumake do it)
* add Kerberos support for authenticating uid in export requests (instead of
  relying on reserved ports)
* Customs: allow general boolean expression over attributes.
* RPC: allow transparent forwarding of broacasts between networks.
* Pmake: keep trying to export while other jobs are still running. -- DONE
* Customs: do more sanity checking on waybill to prevent accidental or
  malicious crashing of daemon
