RFR: 8330051: Small ObjectMonitor spinning code cleanups [v4]

[Coleen Phillimore]

On Thu, 18 Apr 2024 14:21:03 GMT, Axel Boldt-Christmas <aboldtch at openjdk.org> wrote:

>> Might even call it `Interference`. The way it is used is to signal to the spin code that we observed an unlocked monitor, but our locking was interfered with.
>
> Or `Contention`

I like Interference.  That matches the spinning code below, like you said.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18730#discussion_r1571093726