RFR: 8353741: Improve UUID.toString performance by using SIMD within a register instead of table lookup

[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.

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Commit messages:
 - 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
 - little endian
 - manual expand
 - Remove unnecessary steps
 - ... and 3 more: https://git.openjdk.org/jdk/compare/37f8e419...1059d39f

Changes: https://git.openjdk.org/jdk/pull/22928/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22928&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353741
  Stats: 78 lines in 2 files changed: 47 ins; 27 del; 4 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