RFR: 7902989: jcstress: Add samples for high-level race conditions [v7]

[Michael Mirwaldt]

On Fri, 2 Jul 2021 14:27:49 GMT, Michael Mirwaldt <github.com+6693355+mmirwaldt at openjdk.org> wrote:

>> Ok, thanks.
>
> Done

Can we resolve that?

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PR: https://git.openjdk.java.net/jcstress/pull/88