RFR - 8132734: java.util.jar.* changes to support multi-release jar files

[Steve Drach]

>>>> Please review the following webrev that adds support for multi-release jars as specified in JEP-238.
>>>> 
>>>> Issue: https://bugs.openjdk.java.net/browse/JDK-8132734 <https://bugs.openjdk.java.net/browse/JDK-8132734> <https://bugs.openjdk.java.net/browse/JDK-8132734 <https://bugs.openjdk.java.net/browse/JDK-8132734>>
>>>> JEP 238: https://bugs.openjdk.java.net/browse/JDK-8047305 <https://bugs.openjdk.java.net/browse/JDK-8047305><https://bugs.openjdk.java.net/browse/JDK-8047305 <https://bugs.openjdk.java.net/browse/JDK-8047305>>
>>>> Webrev: http://cr.openjdk.java.net/~psandoz/multiversion-jar/jar-webrev/ <http://cr.openjdk.java.net/%7Epsandoz/multiversion-jar/jar-webrev/><http://cr.openjdk.java.net/~psandoz/multiversion-jar/jar-webrev/ <http://cr.openjdk.java.net/%7Epsandoz/multiversion-jar/jar-webrev/>>
>>>> …
>> 
>>> Steve - is the webrev complete, just wondering as I don't see any tests.
>> 
>> Yes it is complete.  Oracle SQE has done the tests, and have tested the changes.  They will integrate the tests after this webrev is integrated.  I’ve been told that this is the way it’s done for new features.
> No so so hopefully the tests will appear soon so that they can be pushed at the same time.

Yes.  I’ve decided not to depend on SQE, but to do it the right way.

> 
> One other question about this webrev. It doesn't include any changes to the tools. I guess I assumed there would be updates to jar and javac, maybe jdeps. The JEP did mention this but perhaps this work has been split out?

Yes, the JEP issue has several subtasks.  This one, 8132734, is just for java.util.jar.JarFile.  There will be a separate webrev for jar tool and another one for enhancements to ZipFileSystem.  And then there are several more pieces to the puzzle such as javac, etc.