RFR: 8339616: GenShen: Introduce new state to distinguish promote-in-place phase as distinct from concurrent evacuation

[Kelvin Nilsen]

On Wed, 25 Sep 2024 17:32:58 GMT, William Kemper <wkemper at openjdk.org> wrote:

> Not clean, but not hard to resolve conflicts.

Marked as reviewed by kdnilsen (Committer).

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PR Review: https://git.openjdk.org/shenandoah-jdk21u/pull/105#pullrequestreview-2329107237