<i18n dev> RFR: 8264544: Case-insensitive comparison issue with supplementary characters.

[Naoto Sato]

Please review the fix to the subject issue. Thanks to the contribution by Chris Johnson.

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Commit messages:
 - 8264544: Case-insensitive comparison issue with supplementary characters.

Changes: https://git.openjdk.java.net/jdk/pull/3300/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3300&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264544
  Stats: 11 lines in 3 files changed: 3 ins; 0 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3300.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3300/head:pull/3300

PR: https://git.openjdk.java.net/jdk/pull/3300