RFR: Export JavaThread::_lock_id, ObjectMonitor::_stack_locker and markWord::marked_value.

[Alan Bateman]

On Mon, 22 Jul 2024 16:00:00 GMT, Yudi Zheng <yzheng at openjdk.org> wrote:

> Essential exports for implementing fibers support in Graal.

Marked as reviewed by alanb (Committer).

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PR Review: https://git.openjdk.org/loom/pull/211#pullrequestreview-2195805526