RFR: 8330846: Add stacks of mounted virtual threads to the HotSpot thread dump [v15]

[David Holmes]

On Tue, 11 Jun 2024 21:05:38 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 one additional commit since the last revision:
> 
>   Require continuations to run the test

Sorry for the delay. Leaving the indentation to another PR is fine. Thanks.

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Marked as reviewed by dholmes (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19482#pullrequestreview-2111836480