Install scorefile as group games writeable

Remove revoke from game, score can't work with revoke

games/robots/Makefile

@@ -10,7 +10,7 @@ LDADD=	-lcurses -ltermcap -lcompat
 HIDEGAME=hidegame
 
 beforeinstall:
-	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 600 /dev/null \
+	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 664 /dev/null \
 	    ${DESTDIR}/var/games/robots_roll
 
 .include <bsd.prog.mk>

games/robots/main.c

@@ -56,10 +56,6 @@ char	**av;
 	extern int	Max_per_uid;
 	void quit();
 
-	/* revoke */
-	setegid(getgid());
-	setgid(getgid());
-
 	show_only = FALSE;
 	if (ac > 1) {
 		bad_arg = FALSE;