`ResourceBundle.CacheKey.equals()` and `Bundles.CacheKey.equals()` are quire outdated. This simple clean-up modernizes them.
------------- Commit messages: - Copyright year update - Modernize Bubldes.equals() Changes: https://git.openjdk.org/jdk/pull/12328/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12328&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8301492 Stats: 13 lines in 2 files changed: 0 ins; 4 del; 9 mod Patch: https://git.openjdk.org/jdk/pull/12328.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12328/head:pull/12328 PR: https://git.openjdk.org/jdk/pull/12328
