patch/proposal: obsolete configurations in 3.1

[Joel Sherrill]

David O'Brien wrote:
> 
>
>     i[34567]86-*-aout*)
>     i[34567]86-*-coff*)

In general, any target of the form CPU-*-OBJECT_FORMAT* should be
left in since it is a very basic target to use as a baseline for
a port and they are commonly used in the embedded world.

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