PATCH: 4.0 backport of libstdc++ testsuite changes

[Paolo Carlini]

Mark Mitchell wrote:

>This patch contains no changes from the mainline version of the
>patch.  I plan to check this in after 24 hours, unless there are
>objections.  Benjamin has already OK'd the backport in principle, but
>I am going to err on the side of caution.
>
Definitely ok with me too, but you may want to have a look to the AIX issue.

Paolo.