git: 9front

ref: fd30b4f236ea3d327e8a21c61b883ed915d3d0bc
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