RFR: 8156499 Update jlink to support creating images with modules that are packaged as multi-release JARs

[Steve Drach]

>>>> It exists purely because another class in the same versioned directory depends on it.  If we are creating a versionedStream for the version that the non-public class is in, it will be in finalNames, otherwise it won’t be.  I believe the code is correct here.
>>>> 
>>>> New concealed packages can be added in a versioned section of the jar file created by jar tool.  Should classes in concealed packages be added to finalNames or not?  Or stated differently, for jlink, should a versionedStream contain entries in concealed packages?
>>>> 
>>> Er, I thought the plan was for the set of concealed packages to be the same. It's okay for the ConcealedPackages in the base section to include "empty" packages.
>> 
>> I wasn’t involved with that decision.  Chris wrote that code, perhaps he can comment.
> 
> This surprises me, as I have the same recollection as Alan; no additional
> concealed packages are allowable in the versioned section.
> 
> I just checked the jar tool, and it does NOT add any versioned specific
> concealed packages.

You’re right.  Apparently when I read the code this morning, I hadn’t had enough coffee yet ;-)