<i18n dev> RFR: 8310818: Refactor more Locale tests to use JUnit [v2]

[Justin Lu]

> Please review this PR which refactors additional tests in Locale to use JUnit.
> 
> If a test was named bugNNNNNNN.java, it was renamed to something more descriptive.
> 
> Below is a list of all the changes
> 
> - Refactor and Rename Bug4175998Test.java as ISO639.java
> - Refactor and Rename Bug8001562.java as JDK7LocaleServiceDiffs.java
> - Refactor and Rename Bug8008577.java as ExpectedAdapterTypes.java
> - Refactor Bug8025703.java
> - Refactor and Rename Bug8026766.java as LRToString.java
> - Refactor and Rename Bug8071929.java as ISO3166.java
> - Refactor and Rename Bug8032842.java to PreserveTagCase.java

Justin Lu has updated the pull request incrementally with two additional commits since the last revision:

 - Review: Remove Bug8025703.java and add to LSRT.java
 - Review: Clarify comments in ISO639.java

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/14721/files
  - new: https://git.openjdk.org/jdk/pull/14721/files/f065726e..c1c55898

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14721&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14721&range=00-01

  Stats: 104 lines in 3 files changed: 12 ins; 88 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/14721.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14721/head:pull/14721

PR: https://git.openjdk.org/jdk/pull/14721