RFR: Merge jdk8u:master

[Andrew John Hughes]

Merge jdk8u382-b05

GHA builds will not work until [JDK-8293107](https://bugs.openjdk.org/browse/JDK-8293107) is merged in 8u462-b01

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Commit messages:
 - Merge jdk8u382-b05
 - 8305312: Enhanced path handling
 - 8304468: Better array usages
 - 8300596: Enhance Jar Signature validation
 - 8298676: Enhanced Look and Feel
 - 8301119: Support for GB18030-2022

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/shenandoah-jdk8u/pull/51/files
  Stats: 1077 lines in 16 files changed: 939 ins; 22 del; 116 mod
  Patch: https://git.openjdk.org/shenandoah-jdk8u/pull/51.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk8u.git pull/51/head:pull/51

PR: https://git.openjdk.org/shenandoah-jdk8u/pull/51