RFR (urgent) 8250516: [BACKOUT] Move mirror oops from Universe into OopStorage

[Daniel D. Daugherty]

Backout looks good. Mechanically verified the backout against
the originals.

Dan

On 7/24/20 10:37 AM, coleen.phillimore at oracle.com wrote:
> open webrev at http://cr.openjdk.java.net/~coleenp/2020/8250516.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8250516
>
> The backout was clean.
> Thanks,
> Coleen