4.4BSD snapshot (revision 8.1); add 1993 to copyright
unsigned length fix
Add include files to get prototype declarations, and fix bugs found.
optimize for machines other than the Cray (infinite loop takes too long)
change length to size_t; make sure length of 0 still works
new copyright notice
keep string.h and source in sync
written by Jeffrey Mogul, Stanford; add Berkeley specific header
added LIBC_SCCS condition for sccs ids
Add copyright
version from mogul with loop unrolled for speed
date and time created 80/12/21 16:40:22 by wnj