Research V7 development

Research V7 development
Work on file usr/src/cmd/eqn/diacrit.c
Work on file usr/src/cmd/eqn/e.h
Work on file usr/src/cmd/eqn/e.y
Work on file usr/src/cmd/eqn/eqnbox.c
Work on file usr/src/cmd/eqn/fromto.c
Work on file usr/src/cmd/eqn/font.c
Work on file usr/src/cmd/eqn/funny.c
Work on file usr/src/cmd/eqn/glob.c
Work on file usr/src/cmd/eqn/integral.c
Work on file usr/src/cmd/eqn/io.c
Work on file usr/src/cmd/eqn/lex.c
Work on file usr/src/cmd/eqn/lookup.c
Work on file usr/src/cmd/eqn/makefile
Work on file usr/src/cmd/eqn/mark.c
Work on file usr/src/cmd/eqn/move.c
Work on file usr/src/cmd/eqn/matrix.c
Work on file usr/src/cmd/eqn/over.c
Work on file usr/src/cmd/eqn/paren.c
Work on file usr/src/cmd/eqn/shift.c
Work on file usr/src/cmd/eqn/pile.c
Work on file usr/src/cmd/eqn/size.c
Work on file usr/src/cmd/eqn/sqrt.c
Work on file usr/src/cmd/eqn/text.c

Co-Authored-By: Lorinda Cherry <llc@research.uucp>
Synthesized-from: v7