UUCP dialing times

[utzoo!decvax!ucbvax!ihnss!mhtsa!harpo!vax135!cornell!jgh]

At cornell we simply have defined "Eve" and "Night" to correspond
to the reduced rate periods.  This is not as general a facility, but
makes the L.sys file more readable, with entries like

foovax Eve .....
barvax Night ....

	Jim Hook
	decvax!cornell!hook
	vax135!cornell!hook
(this change to conn.c takes ~ 3 minutes)