[PATCH roland/env-only] Avoid re-exec-self in bug-setlocale1.

[Carlos O'Donell]

On 03/05/2015 05:18 PM, Roland McGrath wrote:
> I suspect that where we want to get to is that all tests run with a
> completely controlled environment.  I can't really think of any reason why
> any of our tests should be run with random ambient environment variables.
> But I'm starting small.

Agreed.

Cheers,
Carlos.