[RFA] save/restore environ in libiberty pex_unix_exec_child

[Doug Evans]

On Mon, Dec 7, 2009 at 12:55 PM, DJ Delorie <dj@redhat.com> wrote:
>
> Hmm... my Linux doesn't even include execvpe().
>
> Ok to check it in then, but *please* include a comment documenting the
> assumption that the parent won't run until the child is done.
>

Thanks.

I'm always for more comments explaining why things are the way they are.