[patch] CFAR benchmark update

[Don McCoy]

The attached patch enhances the CFAR benchmark by providing a second 
algorithm that processes the data by range vector instead of computing 
the values for a single range cell over all vectors.  Some other minor 
changes help increase the stability of the algorithm with respect to 
avoiding false hits and outright misses in terms of finding targets.

As the rework was extensive by the looks of the changes, the original 
algorithm did not change substantially (although the dimension ordering 
did change in the explicit declaration of the data cube, it can be 
adjusted easily in order to take advantage of recent dispatch 
additions).  For ease of review, I'm including a patched copy of the 
benchmark as well.

Regards,

-- 
Don McCoy
don (at) CodeSourcery
(888) 776-0262 / (650) 331-3385, x712
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