Add copyright

Add copyright

SCCS-vsn: games/snake/snake/busy.c 5.1
SCCS-vsn: games/snake/snake/move.c 5.1
SCCS-vsn: games/snake/snake/snake.c 5.1
SCCS-vsn: games/snake/snscore/snscore.c 5.1
SCCS-vsn: games/snake/snake/snake.h 5.1
SCCS-vsn: games/snake/snake/Makefile 5.1
SCCS-vsn: games/trek/Makefile 5.1
SCCS-vsn: games/trek/abandon.c 5.1
SCCS-vsn: games/trek/attack.c 5.1
SCCS-vsn: games/trek/autover.c 5.1
SCCS-vsn: games/trek/capture.c 5.1
SCCS-vsn: games/trek/cgetc.c 5.1
SCCS-vsn: games/trek/check_out.c 5.1
SCCS-vsn: games/trek/checkcond.c 5.1
SCCS-vsn: games/trek/compkl.c 5.1
SCCS-vsn: games/trek/damage.c 5.1
SCCS-vsn: games/trek/damaged.c 5.1
SCCS-vsn: games/trek/dcrept.c 5.1
SCCS-vsn: games/trek/destruct.c 5.1
SCCS-vsn: games/trek/dock.c 5.1
SCCS-vsn: games/trek/dumpme.c 5.1
SCCS-vsn: games/trek/dumpssradio.c 5.1
SCCS-vsn: games/trek/events.c 5.1
SCCS-vsn: games/trek/externs.c 5.1
SCCS-vsn: games/trek/getcodi.c 5.1
SCCS-vsn: games/trek/help.c 5.1
SCCS-vsn: games/trek/impulse.c 5.1
SCCS-vsn: games/trek/initquad.c 5.1
SCCS-vsn: games/trek/lrscan.c 5.1
SCCS-vsn: games/trek/move.c 5.1
SCCS-vsn: games/trek/nova.c 5.1
SCCS-vsn: games/trek/out.c 5.1
SCCS-vsn: games/trek/ram.c 5.1
SCCS-vsn: games/trek/ranf.c 5.1