RFR: 8301403: Eliminate memory allocations in JVMFlag::printFlags during signal handling [v5]

[Gerard Ziemski]

On Tue, 23 Jul 2024 10:16:17 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> It would benefit from clearer coding.
> 
> E.g.
> 
> ```
> const bool skip = ...
> const bool visited = ...
> if (!visited && !skip) ...
> ```

I like this clarification coding style.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20202#discussion_r1688422609