RFR: 8316657: Support whitebox testing in microbenchmarks [v2]

[Claes Redestad]

On Mon, 11 Dec 2023 13:47:26 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>> The need to use whitebox-testing (wb.jar) from JMH microbenchmarks has recently arisen.
>
> Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Revert change in RunTests

This is ok. Enables WB as a compile-time dependency, but leaves it to the author of WB-dependent tests to either add it as a runtime dependency explicitly or work on a solution to have JMH run forks with the WB dependency added.

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Marked as reviewed by redestad (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/16996#pullrequestreview-1775234453