Integrated: Make generational mode experimental

[William Kemper]

On Wed, 24 May 2023 17:09:52 GMT, William Kemper <wkemper at openjdk.org> wrote:

> Setting `-XX:ShenandoahGCMode=generational` now requires `XX:+UnlockExperimentalVMOptions`.

This pull request has now been integrated.

Changeset: e33ecfae
Author:    William Kemper <wkemper at openjdk.org>
URL:       https://git.openjdk.org/shenandoah/commit/e33ecfaedff193a62ae4dfebc844b94305a569ad
Stats:     7 lines in 4 files changed: 2 ins; 0 del; 5 mod

Make generational mode experimental

Reviewed-by: kdnilsen

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PR: https://git.openjdk.org/shenandoah/pull/283