git: plan9front

ref: 17f0b2ce38f3c845a3bbbe0630185ca8dac684a4
dir: /sys/src/9/

bcm/
boot/
ip/
kw/
mkfile
mtx/
omap/
pc/
pc64/
port/
ppc/
sgi/
teg2/
xen/
zynq/