Upgrading the GB18030 charset in the JDK to the latest 2022 standard. Since this is not a compatible upgrade to the existing mapping, a new system property `jdk.charset.GB18030` is introduced. If it is set to "2000", the mapping falls back to the existing mapping based on the 2000 standard, otherwise, it defaults to 2022 mapping. Refer to the corresponding CSR for more detail.
------------- Commit messages: - Check initPhase and don't call System.getProperty if in phase 1 - Some clean-up - Some more fixes - removed unnecessary method name composition - Removed unnecessary imports - aliases fix - Move GB18030 into standard charsets provider - indentation - Removed unused annotation - Removed null check - ... and 4 more: https://git.openjdk.org/jdk/compare/574b48c6...0f3c25ce Changes: https://git.openjdk.org/jdk/pull/12518/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12518&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8301119 Stats: 283 lines in 14 files changed: 129 ins; 41 del; 113 mod Patch: https://git.openjdk.org/jdk/pull/12518.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12518/head:pull/12518 PR: https://git.openjdk.org/jdk/pull/12518
