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

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

SCCS-vsn: lib/libtelnet/getent.c 8.1
SCCS-vsn: lib/libplot/gigi/arc.c 8.1
SCCS-vsn: lib/libtelnet/kerberos.c 8.1
SCCS-vsn: lib/libplot/gigi/box.c 8.1
SCCS-vsn: lib/libplot/gigi/circle.c 8.1
SCCS-vsn: lib/libtelnet/kerberos5.c 8.1
SCCS-vsn: lib/libplot/gigi/close.c 8.1
SCCS-vsn: lib/libtelnet/key-proto.h 8.1
SCCS-vsn: lib/libplot/gigi/cont.c 8.1
SCCS-vsn: lib/libplot/gigi/dot.c 8.1
SCCS-vsn: lib/libtelnet/krb4encpwd.c 8.1
SCCS-vsn: lib/libplot/gigi/erase.c 8.1
SCCS-vsn: lib/libtelnet/misc-proto.h 8.1
SCCS-vsn: lib/libplot/gigi/gigi.h 8.1
SCCS-vsn: lib/libtelnet/misc.c 8.1
SCCS-vsn: lib/libplot/gigi/label.c 8.1
SCCS-vsn: lib/libtelnet/misc.h 8.1
SCCS-vsn: lib/libplot/gigi/line.c 8.1
SCCS-vsn: lib/libtelnet/read_password.c 8.1
SCCS-vsn: lib/libplot/gigi/linemod.c 8.1
SCCS-vsn: lib/libtelnet/rsaencpwd.c 8.1
SCCS-vsn: lib/libplot/gigi/move.c 8.1
SCCS-vsn: lib/libtelnet/spx.c 8.1
SCCS-vsn: lib/libplot/gigi/open.c 8.1
SCCS-vsn: lib/libplot/gigi/point.c 8.1
SCCS-vsn: lib/libplot/gigi/space.c 8.1
SCCS-vsn: lib/libplot/grn/arc.c 8.1
SCCS-vsn: lib/libplot/grn/box.c 8.1
SCCS-vsn: lib/libplot/grn/circle.c 8.1
SCCS-vsn: lib/libplot/grn/close.c 8.1
SCCS-vsn: lib/libplot/grn/cont.c 8.1
SCCS-vsn: lib/libplot/grn/dot.c 8.1
SCCS-vsn: lib/libplot/grn/erase.c 8.1
SCCS-vsn: lib/libplot/grn/grnplot.h 8.1
SCCS-vsn: lib/libplot/grn/label.c 8.1
SCCS-vsn: lib/libplot/grn/line.c 8.1
SCCS-vsn: lib/libplot/grn/linemod.c 8.1