[lworld] Integrated: 8329205: [lworld] Add jdk.internal.value.CheckedType API

[Mandy Chung]

On Wed, 27 Mar 2024 17:07:05 GMT, Mandy Chung <mchung at openjdk.org> wrote:

> This PR adds `jdk.internal.value.CheckedType` and other internal APIs for null-restricted value type and array support.   Also rename `Unsafe::isFlattenedArray` to `Unsafe::isFlatArray`.

This pull request has now been integrated.

Changeset: 0888af6e
Author:    Mandy Chung <mchung at openjdk.org>
URL:       https://git.openjdk.org/valhalla/commit/0888af6eb813699af1c2d7a81460ad7be3a87087
Stats:     867 lines in 33 files changed: 535 ins; 139 del; 193 mod

8329205: [lworld] Add jdk.internal.value.CheckedType API

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PR: https://git.openjdk.org/valhalla/pull/1065