RFR: 8307533: Use atomic bitset functions for metadata flags [v3]

[Coleen Phillimore]

On Mon, 15 May 2023 15:23:06 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Replace the bit set copies from metadata to use the Atomic functions.
>> Tested with tier1-4.
>
> Coleen Phillimore has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
> 
>  - Merge branch 'master' into bit-set
>  - remove extra variables in favor of casts to help the template.
>  - 8307533: Use atomic bitset functions for metadata flags

Thanks Calvin and Kim

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PR Comment: https://git.openjdk.org/jdk/pull/13843#issuecomment-1550019929