Description:

Customs is a remote execution facility for PMake. Customs is designed
to run on a network of machines with a consistent, shared filesystem.
Customs requires Sun RPC in order to use XDR (eXternal Data
Representation) routines for logging functions.

A single server is designated as the master agent and is additionally
responsible for noting when a machine goes down, from which machines
any given machine will accept jobs and parcelling out available
machines to requesting clients. The job of master is not given to any
one machine but, rather, is decided among the active agents whenever
the previous master dies.

Clients are provided to:
- alter the availability criteria for the local machine (importquota)
- find the status of all registered hosts on the net (reginfo).
- abort, restart or ping any customs agent on the network (cctrl).
- export a command from the shell (export).
- accept log information from all hosts on the net (logd).