git: 9front

ref: 363a4a08edc8722e60d95acf5f0a217a3bdfafbb
dir: /sys/src/cmd/troff/

FIXES
README
cvt
dwbinit.c
dwbinit.h
ext.h
find
fns.h
hytab.c
mkfile
n1.c
n10.c
n2.c
n3.c
n4.c
n5.c
n6.c
n7.c
n8.c
n9.c
ni.c
suftab.c
t10.c
t11.c
t6.c
tdef.h
unansi