Macbook and ACPI Battery support

[PaulTT <pa...@gm...>]

i had a problem with ACPI and MacBook...
after a while, with pbbuttonsd running, acpi stopped giving (and
readin) sane values for percent charge of the battery, answering with
a 'nan%'
looking in acpi files, it lost even data about voltage and so on...

now i commented out the lines in pbbuttonsd accessing battery data,
just to isolate the problem, and it worked, it's 4 days, and i still
get correct battery charge values.

i'll try to get around the problem and write a patch which could
remove the problem.
in the meantime i could post a patch which add an option in config
file to enable/disable acpi battery check/control...

can i go on?

thanx, PaulTT