[PATCH] Remove locale-related environment variables from subprocess environments

[Roland McGrath]

> Hmm.  Is it fine to require that test-wrapper-env supports the -u option 
> of env?  There is no other way to unset environment variables at this 
> point, as far as I can see.

I think using -u is OK, but Joseph might have an opinion.  If it's a
problem, then for all these particular variables setting them to empty is
probably equivalent.