RFR: 8356173: Remove ThreadCritical

[Coleen Phillimore]

Updated the description in the bug.  This removes the last use of ThreadCritical and replaces it with a global PlatformMutex lock.
Tested with tier1-4, and tier1 on all Oracle-supported OSs.

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Commit messages:
 - Rename ChunkPoolLocker
 - Fix comments
 - Add an initialization call.
 - Remove includes
 - Remove ThreadCritical
 - Remove ThreadCritical from NMT.

Changes: https://git.openjdk.org/jdk/pull/25072/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25072&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8356173
  Stats: 266 lines in 23 files changed: 32 ins; 224 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/25072.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25072/head:pull/25072

PR: https://git.openjdk.org/jdk/pull/25072