RFR: 8344461: Additional cleanup in NewThreadAction [v2]

[Roger Riggs]

On Wed, 4 Dec 2024 22:35:08 GMT, Stuart Marks <smarks at openjdk.org> wrote:

>> Convert the RMI NewThreadAction class into a couple static methods on RuntimeUtil. Also remove a couple unnecessary qualified exports from java.base to java.rmi.
>
> Stuart Marks has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Make thread group fields final.

Thanks for the updates.

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Marked as reviewed by rriggs (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/22557#pullrequestreview-2480051852