configuration files

[Matthew Dillon]

    Right now the RCNG states recorded in the varsym list are:

	disabled		subsystem is not enabled

	running		subsystem was configured/is-running/is-not-relevant

	failed		subsystem could not be configured

    We could add a few more states:

	configured		subsystem is configured but requires no daemon.

	irrelevant		subsystem is not relevant to the current 
				system config (present so dependancies on
				this subsystem can be ignored).  e.g.
				'diskless' and 'dhclient' and a few other
				subsystems when they are not otherwise
				required.

	running[.ipcinfo]	subsystem is 'running' via one or more
				daemons and, if ipcinfo is present, the
				daemon is being actively 'maintained' by
				a monitoring process which adheres to a
				formal API (via a unix domain socket or
				something like that), or this could just
				be a PID which supports HUP-reloads and
				INTR stops.

						-Matt