RFR: 8292591: Experimentally add back barrier-less Java thread transitions [v6]

[Robbin Ehn]

On Fri, 9 Sep 2022 18:54:29 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>> Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fixes for Dan
>
> Marked as reviewed by dcubed (Reviewer).

Thanks @dcubed-ojdk !

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PR: https://git.openjdk.org/jdk/pull/10123