removed all device-dependent code. That means anything that was

removed all device-dependent code.  That means anything that was
optimized for a particular typesetter is gone, and eqn now looks up the
output device in a device file, like everybody else.

SCCS-vsn: local/ditroff/ditroff.old.okeeffe/eqn/e.h 1.2
SCCS-vsn: local/ditroff/ditroff.old.okeeffe/eqn/io.c 1.2
SCCS-vsn: local/ditroff/ditroff.old.okeeffe/eqn/glob.c 1.2
SCCS-vsn: local/ditroff/ditroff.old.okeeffe/eqn/paren.c 1.2
SCCS-vsn: local/ditroff/ditroff.old.okeeffe/eqn/sqrt.c 1.2
SCCS-vsn: local/ditroff/ditroff.old.okeeffe/eqn/text.c 1.2