RFR: 8330846: Add stacks of mounted virtual threads to the HotSpot thread dump [v8]

[David Holmes]

On Tue, 4 Jun 2024 07:25:41 GMT, Inigo Mediavilla Saiz <duke at openjdk.org> wrote:

>> Print the stack traces of mounted virtual threads when calling `jcmd <pid> Thread.print`.
>
> Inigo Mediavilla Saiz has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Cleanup test
>    
>    - Stop virtualthread
>    - Remove unneeded imports
>    - Remove modules that are not needed
>  - Fix copyright year

Test updates look okay. Thanks.

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PR Review: https://git.openjdk.org/jdk/pull/19482#pullrequestreview-2095581013