git: 9front

ref: dffca6aecae11acffcd33a8cf5687fa9e9a7c1db
dir: /sys/lib/troff/term/

tab.37
tab.450
tab.450-12
tab.dumb
tab.i300
tab.lp
tab.post
tab.think
tab.thinkbold
tab.thinksmall
tab.utf