[Hardware] RC5 core update

[John L. Bass]

Hi Martin,

see the post:

	From jbass Sun Nov 26 07:47:27 2006
	To: hardware at lists.distributed.net
	Subject: Fully unrolled RC5 core, pipelined and retimed using LUT RAMs

It includes the core generator, test bench, and checking code for correct
values.

Have fun,
John