crc32-optimize-loops-for-x86.diff
Add two changes that improve the performance of x86 systems
	1. replace main loop with incrementing counter
	   this change improves the performance of the selftest
	   by about 5-6% on Nehalem CPUs. The apparent
	   reason is that the compiler can use the loop index
	   to perform an indexed memory access. This is
	   reported to make the performance of PowerPC CPUs
	   to get worse.
	2. replace the rem_len loop with incrementing counter
	   this change improves the performance of the selftest,
	   which has more than the usual number of occurances,
	   by about 1-2% on x86 CPUs. In actual work loads
	   the length is most often a multiple of 4 bytes and
	   this code does not get executed as often if at all.
	   Again this change is reported to make the performance
	   of PowerPC get worse.

Signed-off-by: Bob Pearson <rpearson@systemfabricworks.com>