RFR: 8353741: Eliminate table lookup in UUID.toString [v4]

[Shaojin Wen]

> Improve the performance of UUID::toString by using Long.expand and SWAR (SIMD within a register) instead of table lookup. Eliminating the table lookup can also avoid the performance degradation problem when the cache misses.

Shaojin Wen has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 16 additional commits since the last revision:

 - Merge remote-tracking branch 'upstream/master' into optim_uuid_to_string_202501
 - simplify code
 - Remove redundant comments
 - use Long.expand
 - Merge remote-tracking branch 'upstream/master' into optim_uuid_to_string_202501
 - refactor
 - from j3graham
 - add comments
 - use ByteArrayLittleEndian
 - ues Long.expand
 - ... and 6 more: https://git.openjdk.org/jdk/compare/6f6e5efd...878a3cb7

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22928/files
  - new: https://git.openjdk.org/jdk/pull/22928/files/55223571..878a3cb7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22928&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22928&range=02-03

  Stats: 353363 lines in 4033 files changed: 118357 ins; 216754 del; 18252 mod
  Patch: https://git.openjdk.org/jdk/pull/22928.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22928/head:pull/22928

PR: https://git.openjdk.org/jdk/pull/22928