Submitted JEP: Asynchronous Stack Trace VM API

[Mark Reinhold]

2022/10/11 1:18:19 -0700, johannes.bechberger at sap.com:
> Thanks for your comments. I incorporated them in the updated version
> of the JEP and updated all related repositories that now are
> implemented based on current JDK20 head and async-profiler head. The
> implementation of the JEP now resides in the sandbox repository too.

Thanks, that’s an improvement.

For IP clarity, could you please also move the demo into the same
sandbox branch?  You can place it under src/demo/share for now.

I’ll copy-edit the JEP text shortly.

- Mark