[patch] use ARRAY_SIZE

[walter harms]

hi list,
here is the ARRAY_SIZE patch. It replaces every size(arr)/size(arr[0])
and private defines with ARRAY_SIZE() as defined in linux/kernel.h.
Sometimes it was used only once so i placed it directly.

I have test-compiled the stuff against 1.6.0 vanilla.

note: i did no bloat check since this is a clean-up patch

re,
 wh
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