[lilliput-jdk21u:lilliput] RFR: 8310513: [s390x] Intrinsify recursive ObjectMonitor locking

[Amit Kumar]

Hi all,

This pull request contains a backport of commit [47df1459](https://github.com/openjdk/jdk/commit/47df14590c003ccb1607ec0edfe999fcf2aebd86) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Amit Kumar on 10 Apr 2024 and was reviewed by Lutz Schmidt and Martin Doerr.

Thanks!

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Commit messages:
 - Backport 47df14590c003ccb1607ec0edfe999fcf2aebd86

Changes: https://git.openjdk.org/lilliput-jdk21u/pull/33/files
  Webrev: https://webrevs.openjdk.org/?repo=lilliput-jdk21u&pr=33&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310513
  Stats: 79 lines in 1 file changed: 32 ins; 14 del; 33 mod
  Patch: https://git.openjdk.org/lilliput-jdk21u/pull/33.diff
  Fetch: git fetch https://git.openjdk.org/lilliput-jdk21u.git pull/33/head:pull/33

PR: https://git.openjdk.org/lilliput-jdk21u/pull/33