RFR: 8346082: Output JVMTI agent information in hserr files [v4]

[Matthias Baesken]

On Fri, 13 Dec 2024 12:18:13 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> We should output more information about the JVMTI agents in the hserr file.
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   simplify coding

When printing  'JVMTI agents: none' , should I maybe better iterate  `JvmtiAgentList::all() `  to get the xrun agents as well and be sure that there are  _really_ none ?
Unfortunately `JvmtiAgentList::all() `  is private , any objections making it public ?  Otherwise we probably need to call  2 iterations (agents() and xrun_agents()).

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PR Comment: https://git.openjdk.org/jdk/pull/22706#issuecomment-2544878498