RFR: 8291555: Implement alternative fast-locking scheme [v4]

[Roman Kennke]

On Thu, 19 Jan 2023 08:19:54 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

> I always change the flags in code for the reasons David state and I can't forget to add any flags.
> 
> (Test batch is stilling running, no failures except MonitorInflationTest.java)

Ok, right.

I just re-ran tier1-3 with the flag changed in code, on aarch64 and x86_64 without regressions. Will run tier4 overnight.

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PR: https://git.openjdk.org/jdk/pull/10907