<i18n dev> RFR: 8275721: Name of UTC timezone in a locale changes depending on previous code [v4]

[Naoto Sato]

> Fixing time zone name provider for CLDR. In some cases, COMPAT's `UTC` display names were incorrectly substituted for CLDR. The reason it worked fine after `zh-Hant-HK` was that by loading names for `zh-Hant-HK`, the names for `zh-Hant` were cached and hit for the following `zh-MO` name retrieval.

Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:

  Removed unused import

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6709/files
  - new: https://git.openjdk.java.net/jdk/pull/6709/files/cf217f56..8f96e833

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6709&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6709&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6709.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6709/head:pull/6709

PR: https://git.openjdk.java.net/jdk/pull/6709