RFR: 81536534 Update jdeps to be multi-release jar aware

[Mandy Chung]

> On Jun 14, 2016, at 9:41 AM, Steve Drach <steve.drach at oracle.com> wrote:
> 
> Hi Mandy,
> 
>>> Please review the following changeset to make jdeps multi-release jar aware.
>>> 
>>> webrev: http://cr.openjdk.java.net/~sdrach/8153654/webrev.00/index.html <http://cr.openjdk.java.net/~sdrach/8153654/webrev.00/index.html>
>>> issue: https://bugs.openjdk.java.net/browse/JDK-8153654 <https://bugs.openjdk.java.net/browse/JDK-8153654>
>>> 
>>> The changeset adds a new command line option to jdeps.  The -multi-release option can be set to the string “runtime” or an integral string value corresponding to the Java platform releases starting at 9 (i.e. 9, 10, 11, etc.).  Jar files that jdeps accesses, either on the class path or as a target, are opened with the appropriate JarFile.Release parameter.  The mapping from -multi-release value to JarFile.Release is:
>>> 
>>> 9             -> JarFile.Release.VERSION_9
>>> runtime   -> JarFile.Release.RUNTIME
>>> all others -> JarFile.Release.BASE
>>> 
>>> If the option is not present, the jar file mode is JarFile.Release.Base.
>> 
>> Have you considered parsing all versioned entries in MRJAR as the default and include the version information in the output?
> 
> Briefly ;-)  But now that you brought it up, I think the right thing to do is to rescind this RFR and redesign the output for jdeps so that it’ll be more useful for the users by doing what you suggest.

Sounds good.

Mandy