RFR: 8304915: Create jdk.internal.util.Architecture enum and apply

[Erik Joelsson]

On Wed, 5 Apr 2023 15:58:08 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> Define an internal jdk.internal.util.Architecture enumeration and static methods to replace uses of the system property `os.arch`.
> The enumeration values are defined to match those used in the build.
> The initial values are: `X64, X86, IA64, ARM, AARCH64, RISCV64, S390X, PPC64LE`
> Note that `amd64` and `x86_64` in the build are represented by `X64`.
> The values of the system property `os.arch` is unchanged.
> 
> The API is similar to the jdk.internal.util.OperatingSystem enum created by #[12931](https://git.openjdk.org/jdk/pull/12931).
> Uses in `java.base` and a few others are included but other modules will be done in separate PRs.

Looks good from a build point of view.

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Marked as reviewed by erikj (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/13357#pullrequestreview-1373301135