git: 9front

ref: b309f685bce252a009de0a7b6e8fa3d2153aaef6
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