4.4BSD snapshot (revision 8.1); add 1993 to copyright
ch unused, t and f never assigned!
stdc.h -> cdefs.h
from Chris Torek, ANSI version, works with unsigned length arg
minor cleanups
install approved copyright notice
written by Robert Elz; add Berkeley specific header
added LIBC_SCCS condition for sccs ids
date and time created 85/08/05 21:43:12 by kre