RFR: 8349348: Refactor ClassLoaderDeadlock.sh and Deadlock.sh to run fully in java [v3]

[Sean Mullan]

On Thu, 6 Mar 2025 11:49:12 GMT, Mikhail Yankelevich <myankelevich at openjdk.org> wrote:

>> Refactor the following to run fully in java:
>> test/java/security//Security/ClassLoaderDeadlock/ClassLoaderDeadlock.sh
>> test/java/security//Security/ClassLoaderDeadlock/Deadlock.sh
>
> Mikhail Yankelevich has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Jaikiran's comments

The JBS issue should have a `noreg-self` label. Otherwise fix looks ok.

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Marked as reviewed by mullan (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/23440#pullrequestreview-2743181022