RFR: 8334137: Marlin: replace sun.misc.Unsafe memory access methods with FFM [v8]

[Nir Lisker]

On Wed, 11 Jun 2025 17:37:04 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> true
>
> Right. I could remove it if you like, although it isn't hurting anything leaving it there.

It doesn't really matter, but personally I try to use the built in functionality.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1814#discussion_r2140832007