[3/6] nvptx testsuite patches: stdio

[Bernd Schmidt]

Some tests use stdio functions which are unavaiable with the cut-down 
newlib I'm using for ptx testing. I'm somewhat uncertain what to do with 
these; they are by no means the only unavailable library functions the 
testsuite tries to use (signal is another example). Here's a patch which 
deals with parts of the problem, but I wouldn't mind leaving this one 
out if it doesn't seem worthwhile.


Bernd

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