RFR: JDK-8316559: Refactor some util/Calendar tests to JUnit [v3]

Fri Sep 22 22:11:59 UTC 2023

> Please review this PR which converts some tests under _Calendar_ to use JUnit. These tests either previously used the internal _IntlTest_, or used no framework at all. 
> 
> Any files named BugXXXXXXX.java will be renamed after review.

Justin Lu has updated the pull request incrementally with one additional commit since the last revision:

  Add more comments, drop @library tag for tests previously extending IntlTest

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Changes:
  - all: https://git.openjdk.org/jdk/pull/15853/files
  - new: https://git.openjdk.org/jdk/pull/15853/files/a0cfa852..99fd7b24

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15853&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15853&range=01-02

  Stats: 101 lines in 9 files changed: 69 ins; 4 del; 28 mod
  Patch: https://git.openjdk.org/jdk/pull/15853.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15853/head:pull/15853

PR: https://git.openjdk.org/jdk/pull/15853