<i18n dev> RFR: 8263202: Update Hebrew/Indonesian/Yiddish ISO 639 language codes to current

[Naoto Sato]

Please review the changes to the subject issue. java.util.Locale class has a long-standing issue for those obsolete ISO 639 languages where its normalization ends up in the obsolete codes. This change intends to flip the normalization towards the current codes, providing a system property for compatibility behavior. ResourceBundle class is also modified to load either obsolete/current bundles. For more detail, take a look at the CSR.

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Commit messages:
 - Added more ResourceBundleProvider tests
 - ResourceBundleProvider and test cases modifications
 - Eliminated some duplicated code
 - Changed ResourceBundle javadoc
 - Locale class description
 - renamed old resource files
 - inital commit

Changes: https://git.openjdk.java.net/jdk/pull/4069/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4069&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263202
  Stats: 382 lines in 35 files changed: 239 ins; 41 del; 102 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4069.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4069/head:pull/4069

PR: https://git.openjdk.java.net/jdk/pull/4069