[Nut-upsdev] usbhid-ups: shutdown testing needed

[Arjen de Korte]

> ok, I'll retain the 2.2.1 release until we have enough confidence in this
> part.

Good.

> IMO, the APC support should be fine since at least Peter and Charles
> have tested it.

I'm afraid they missed one important thing, namely the fact that the
driver *must* reboot the UPS if the power is present when the driver is
run with the -k option (see docs/shutdown.txt). This in order to prevent
race conditions.