<i18n dev> Review Request JDK-8170772: ResourceBundle improper caching causes tools/javadoc tests intermittently

[Mandy Chung]

Naoto,

Can you review this ResourceBundle caching fix?  The caller module
may be different than the specified module to 
ResourceBundle.getBundle(String, Module) method and it should also
part of the cache key.

http://cr.openjdk.java.net/~mchung/jdk9/webrevs/8170772/webrev.00/

The new test shows the issue there and the first loading of the 
resource bundle of a specific module (success or fail) will be 
put in the cache and used by subsequent calls.

Thanks
Mandy