RFR: 8272447: Remove 'native' ranked Mutex [v3]

[David Holmes]

On Thu, 19 Aug 2021 15:22:37 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> @tstuefe  can probably answer why he picked native.  I assume it was due to availability and that it was a test. I don't think we want tests to be out of the mutex ranking system and deadlock either.  'leaf' didn't deadlock as the other metaspace locks are no-safepoint locks and below leaf.
>
> Yes, it seemed easiest at the time. Replacing it with a ranked mutex is fine.

I'm not at all sure why we would care about a gtest Mutex in terms of the ranking system?

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PR: https://git.openjdk.java.net/jdk/pull/5116