[PATCH] Fix up LD_* vars behaviour

[David Miller]

From: Roland McGrath <roland@hack.frob.com>
Date: Thu, 12 Apr 2012 09:22:17 -0700 (PDT)

> While I think there is a valid argument to be made about changing the
> current and thus expected behavior, I must object to the notion that the
> Linux man-pages project can ever be a constraint on what we decide to do.
> We have nothing to do with that documentation and never tell users we think
> it's correct.

If they are documenting the tool, and their documentation is accurate,
then it's a valid reference point for what we are allowed to change on
people or not.