kenv enhancement

Hi,
	I propose to bring back some lost options to kenv, -c and -s
ie,
	kenv -c class [-s]
so that
	kenv -h is equivalent to kenv -c hint.
and
	kenv -c boot.nfsroot. -s
gives:
nfshandle="X9ca48b3f5b77454e0c00000002000000bfa30631000000000000000000000000X"
path="/d/6"
server="132.65.16.100"

the 'enhanced' kenv is in 
	ftp://ftp.cs.huji.ac.il/users/danny/freebsd/kenv/

danny