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

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

SCCS-vsn: games/sail/assorted.c 8.1
SCCS-vsn: games/sail/dr_1.c 8.1
SCCS-vsn: games/sail/dr_2.c 8.1
SCCS-vsn: games/sail/dr_3.c 8.1
SCCS-vsn: games/sail/dr_4.c 8.1
SCCS-vsn: games/sail/dr_5.c 8.1
SCCS-vsn: games/sail/dr_main.c 8.1
SCCS-vsn: games/sail/driver.h 8.1
SCCS-vsn: games/sail/extern.h 8.1
SCCS-vsn: games/sail/game.c 8.1
SCCS-vsn: games/sail/globals.c 8.1
SCCS-vsn: games/sail/lo_main.c 8.1
SCCS-vsn: games/sail/machdep.h 8.1
SCCS-vsn: games/sail/main.c 8.1
SCCS-vsn: games/sail/misc.c 8.1
SCCS-vsn: games/sail/parties.c 8.1
SCCS-vsn: games/sail/pathnames.h 8.1
SCCS-vsn: games/sail/pl_1.c 8.1
SCCS-vsn: games/sail/pl_2.c 8.1
SCCS-vsn: games/sail/pl_3.c 8.1
SCCS-vsn: games/sail/pl_4.c 8.1