[jdk21u] RFR: 8308452: Extend internal Architecture enum with byte order and address size

[Aleksey Shipilev]

A batch for two clean backports that provide the grounds for other clean backports fixing the same files.

Additional testing:
 - [ ] GHA

-------------

Commit messages:
 - Backport 7f094353673f5047643a2d7b512d0de8c665f215
 - Backport d6dd0dc3e06d42f108fe80920e1102d47a5aa583

Changes: https://git.openjdk.org/jdk21u/pull/151/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=151&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308452
  Stats: 191 lines in 5 files changed: 121 ins; 46 del; 24 mod
  Patch: https://git.openjdk.org/jdk21u/pull/151.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/151/head:pull/151

PR: https://git.openjdk.org/jdk21u/pull/151