[patch] Updated copyright notices for optimized implementation

[Don McCoy]

This patch mostly affects files in the optimized implementation, 
available under our commercial license and the GPL (i.e.  non-BSD licenses).

A few cases where the @file descriptor was wrong were corrected as well.

Ok to commit?

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

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