[crac] RFR: 8348867: [CRaC] Simplify CPUFeatures code

[Timofei Pushkin]

On Tue, 28 Jan 2025 15:11:47 GMT, Timofei Pushkin <tpushkin at openjdk.org> wrote:

> Replaces abandoned #112, but the change set is slightly different

@jankratochvil I had to amend your change bringing `EXCESSIVE3` macro back because it is still used (see 3522d59). Could you take a look at this? I am not entirely sure I reimplemented the macro in a correct way.

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PR Comment: https://git.openjdk.org/crac/pull/194#issuecomment-2621327134