new copyright; att/bsd/shared

new copyright; att/bsd/shared

SCCS-vsn: lib/libplot/aed/aed.h 5.2
SCCS-vsn: lib/libplot/aed/arc.c 5.2
SCCS-vsn: lib/libplot/aed/box.c 5.2
SCCS-vsn: lib/libplot/aed/circle.c 5.2
SCCS-vsn: lib/libplot/aed/close.c 5.2
SCCS-vsn: lib/libplot/aed/cont.c 5.2
SCCS-vsn: lib/libplot/aed/dot.c 5.2
SCCS-vsn: lib/libplot/aed/erase.c 5.2
SCCS-vsn: lib/libplot/aed/label.c 5.2
SCCS-vsn: lib/libplot/aed/line.c 5.3
SCCS-vsn: lib/libplot/aed/linemod.c 5.2
SCCS-vsn: lib/libplot/aed/move.c 5.2
SCCS-vsn: lib/libplot/aed/open.c 5.3
SCCS-vsn: lib/libplot/aed/point.c 5.2
SCCS-vsn: lib/libplot/aed/space.c 5.2
SCCS-vsn: lib/libplot/aed/subr.c 5.2