git: 9front

ref: 70f6bd773a9163d54fa31f7981cbf1d4e40e6c4c
dir: /sys/src/cmd/troff/

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