[patch] Built-in function profiling

[Don McCoy]

This is the first of a series of patches to add built-in profiling 
capability to VSIPL++.  For this initial version, only the FFT, 
Convolution and Correlation objects have been modified.

An example of how to use the profiling features is included in the 
examples/fft.cpp directory.  In brief, it shows the exact type of 
operation performed, the total amount of time spent (even over multiple 
calls), the number of times called, the operation count per call and 
finally, the (calculated) rate of operations (in MFLOPS).  Full 
documentation will be provided in an upcoming patch.

Regards,

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