PATCH: 4.0 backport of libstdc++ testsuite changes

[Mark Mitchell]

Paolo Carlini wrote:
> Mark Mitchell wrote:
> 
> 
>>May I construe that is approval to commit the posted patches, after I
>>fix the AIX issues?
> 
> 
> Yes ;)

Thanks.  What do you think about removing create_testsuite_files?  Do 
people still want that?

-- 
Mark Mitchell
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