RFR: 8369622: GlobalChunkPoolMutex needs to be recursive [v3]

[Johan Sjölen]

> The GlobalChunkPoolMutex replaced ThreadCritical in [JDK-8356173](https://bugs.openjdk.org/browse/JDK-8356173). In NMT, we can unfortunately reach a recursive locking situation in situations when the VM is crashing and NMT attempts to perform a error report. I suggest that we make this particular mutex recursive, until we can resolve the design issues that causes this.
> 
> This PR also replaces the static initialization with `DeferredStatic`, and fixes the indentation of access modifiers to be consistently 0-indented.
> 
> Please note that we do not take the lock in NMT in order to allocate memory, but in order to have a "static picture" of the arena counters.

Johan Sjölen has updated the pull request incrementally with one additional commit since the last revision:

  Revert access modifier style

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/27759/files
  - new: https://git.openjdk.org/jdk/pull/27759/files/4fb0bae1..93e796cf

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27759&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27759&range=01-02

  Stats: 4 lines in 2 files changed: 1 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/27759.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27759/head:pull/27759

PR: https://git.openjdk.org/jdk/pull/27759