ULE vs. 4BSD in RELENG_7

[Josh Carroll]

> That's expected due to the fuzzy rounding of 128 / 10, etc.  Can you set
> slice_min and slice both equal to 7 and see if the numbers come out
> better than without the patch but with a slice value of 7?  Basically I'm
> trying to isolate the effects of the different slice handling in this
> patch from the other changes.

Here are the results. Looks like setting slice_min and slice to 7
degraded performance for all work loads. Should I try any other
settings for slice and slice_min?

ffmpeg:  1:39.91

sysbench (4, 8, 12, 16 threads respectively):

2013.78
2157.6
2175.91
2184.16

And buildworld time: 14m7.517s

Thanks!
Josh