RFA (libstdc++): PATCH to implement C++17 over-aligned new

[Rainer Orth]

Hi Jonathan,

> I've committed the patch now, to fix the failures for Solaris. I'll
> revisit it when I get clarification from the committee about invalid
> alignment arguments.

Solaris bootstraps with the revised patch included just completed
successfully.

Thanks.
        Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University