RFR: 8304915: Create jdk.internal.util.Architecture enum and apply [v4]

[Jaikiran Pai]

On Wed, 5 Apr 2023 19:20:08 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.
>
> Roger Riggs has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Correct spelling of isAARCH64 in WIndows AttachProviderImpl

src/java.base/share/classes/jdk/internal/util/Architecture.java line 42:

> 40:     AARCH64(),
> 41:     RISCV64(),
> 42:     S390X(),

Hello Roger, in a recent unrelated discussion, @RealLucy noted here https://github.com/openjdk/jdk/pull/13228#issuecomment-1488650865 that `s390x` denotes the arch and operating system combination and `s390` on the other hand represents the architecture. So should this enum value instead be `S390`?

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PR Review Comment: https://git.openjdk.org/jdk/pull/13357#discussion_r1159810942