pc386 BSP now supports nanosecond time granularity

[Joel Sherrill]

Hi,

Just a note to let you all know that I implemented
this and committed it to CVS today.  I tested it on
one PC and it appeared to be OK based on the
nsecs test. 

Since this is a popular BSP, I thought a heads up
was in order.  If there are any issues, let me know.

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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