RFR: 8322649: Improve class initialization barrier in TemplateTable::_new for S390 [v2]

[Amit Kumar]

> s390 Port implementation for https://github.com/openjdk/jdk/pull/17006, 
> 
> Testing: 
> Build: fastdebug + release 
> Test: Tier1 {fastdebug}

Amit Kumar has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:

 - Merge master
 - s390 port

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Changes: https://git.openjdk.org/jdk/pull/17481/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17481&range=01
  Stats: 11 lines in 1 file changed: 0 ins; 5 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/17481.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17481/head:pull/17481

PR: https://git.openjdk.org/jdk/pull/17481