[ltp] more re nvram

[Rob Mayoff]

I wrote a little program that sets the bit in /dev/nvram that indicates
that the ThinkLight is on. I ran it with the ThinkLight off. It didn't
turn on the ThinkLight. It reversed the meaning of the bit - 1 started
meaning "ThinkLight off" and 0 started meaning "ThinkLight on".  I ran
it again with the ThinkLight on, and it changed the meaning back.


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