4.4BSD snapshot (revision 8.1); add 1993 to copyright

fix #endif something to #endif /* something */

new copyright; att/bsd/shared

merge in UW isis changes; my merge is untested, but SCCS id's
must be assigned before I leave today :-(

changed esis to make use of routing table; mostly works;
checkpoint before UW merge

change snpa cache to fold in to routing table; this doesn't work yet;
but checkpoint anyhow

move snpacache ioctls to this file (will eventually disappear)

checkpoint for ``alpha tape''; tp is still a little broken.

Checkpoint as of first successful tp connection, before posix, &
before mckusick starts incorporating gnodes

date and time created 88/12/14 15:29:50 by sklower