[jdk21u-dev] RFR: 8330011: [s390x] update block-comments to make code consistent

[Amit Kumar]

On Sat, 27 Apr 2024 05:54:18 GMT, Amit Kumar <amitkumar at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [01bda278](https://github.com/openjdk/jdk/commit/01bda278d6a498ca89c0bc5218680cd51a04e9d3) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Amit Kumar on 17 Apr 2024 and was reviewed by Lutz Schmidt.
> 
> Thanks!

@RealLucy would you take a quick look here as well. In this I had to modify the comments manually there were some other conflicts as well other than copyright header.

But still it only updates the comments , and minor c++ code alignment fix.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/539#issuecomment-2084533588