[PATCH] Add slice by 8 algorithm to cksum to make it faster.

[Kristoffer Brånemyr]

Hi,

I modified cksum to use the well known slice by 8 algorithm in the CRC 
calculation, to make it faster. On my machine it is several times faster than 
the unmodified cksum. It took me a while to figure out since the CRC 
calculation in cksum shifts in the opposite direction than most other 
implementations I've seen. I would be glad if someone could check this patch on 
a big endian machine to see if it produces the correct output! It think it 
might, but not sure.

You can see the patch here:
https://github.com/coreutils/coreutils/pull/43

-- 
/Kristoffer Brånemyr