patch for glibc-2.0.7

[Ulrich Drepper]

Cristian Gafton <gafton@redhat.com> writes:

> Because you are calling it and unless I've stick it in there I've got
> segfault every time I called a setuid/setgid program. (note that it is put
> in the dl-sysdep.c...)
> 
> I suspect it is needed to be defined locally in ld.so

Well, I think the rest of the file where unsetenv is defined is
disturbing the ld.so code.  I'll add the code now.

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