[9] RFR: 8171139: Simplify ResourceBundle.CacheKey and ClassLoader may not be needed

[Naoto Sato]

Hello,

Please review the changes to the subject issue:

https://bugs.openjdk.java.net/browse/JDK-8171139

The changes are located at:

http://cr.openjdk.java.net/~naoto/8171139/webrev.00/

The changeset is the same as the one in the mail thread [1] contributed by Peter Levart, plus additional clearCache() test cases.

Naoto

[1] http://mail.openjdk.java.net/pipermail/core-libs-dev/2017-January/045790.html <http://mail.openjdk.java.net/pipermail/core-libs-dev/2017-January/045790.html>