RFR: 8227653: Add VM Global OopStorage

[Kim Barrett]

> On Jul 17, 2019, at 7:36 PM, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
> 
> Thank you, Kim
> 
> Good. Please file bug for JDK 13 and assign it to me. I will port your JVMCI fix.

Thanks, Vladimir.

And thanks to Thomas and Lois for reviews.

For the record, I pushed the original change (open.00) to jdk/jdk.
Vladimir pushed my open.01.inc change to jdk/jdk13 as a fix for
JDK-8228340, and it will get forward ported to jdk/jdk as part of the
usual process.