[PATCH] powerpc: emulate power5 popcntb instruction

[Paul Mackerras]

Will Schmidt writes:

> I'm not Arnd :-) , but since I'm poking at it anyways,.. how about
> this? 

I just did a patch to fix the existing masks.  Could you do a new
version of this patch that doesn't include the unrelated mask fixes
please?  Also it would be really nice if you could figure out a way to
avoid doing the unnecessary 64-bit logical operations on 32-bit
machines - i.e. using an unsigned long for tmp, but then the constants
become problematic.  Maybe you need something like

#define LCONST(x)	((unsigned long)(x##ULL))

Thanks,
Paul.