[lilliput-jdk17u:lilliput] RFR: 8319897: Move StackWatermark handling out of LockStack::contains

[Aleksey Shipilev]

On Tue, 9 Apr 2024 07:55:52 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

> Backport of https://github.com/openjdk/jdk/commit/bbf52e0e4cb76b4c6425e7d1266dcdbb4df556ea
> 
> It's an enhancement to LW locking, backported to keep lockStack code in sync, to ease subsequent backports.
> 
> Slightly unclean because of NULL vs nullptr diff.

Marked as reviewed by shade (Committer).

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PR Review: https://git.openjdk.org/lilliput-jdk17u/pull/78#pullrequestreview-1988537633