RFR: 8287596: Reorg jdk.test.lib.util.ForceGC [v10]

[Daniel Fuchs]

On Fri, 1 Jul 2022 08:26:30 GMT, Xue-Lei Andrew Fan <xuelei at openjdk.org> wrote:

>> Maybe not for this PR - but it could be useful to have a version of ForceGC that takes as parameter a `ReferenceQueue<T>` and a `Reference<T>`. That would be more efficient than creating a new object and waiting for a different cleaner thread to cleanup that object.
>
> @dfuch  Taking a reference as parameter could simplify the use of ForceGC.  I though about this idea as well, when I had to check lambada expressions in each call.  I would like to do it in the future so that this PR could focus on less things.

Thanks @XueleiFan, that's fine by me!

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PR: https://git.openjdk.org/jdk/pull/8979