The BYTES_PER_WORD assumption doesn't work out on sh64 when we are using a
32-bit ABI.  We want slab caches to be forced to a minimum alignment of
8-bytes, as it was before Anton's change.

This was also already discussed at length with Manfred in this thread:

	http://marc.theaimsgroup.com/?l=linux-kernel&m=110227138116749&w=2Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>