RFR: 8256299: Implement JEP 396: Strongly Encapsulate JDK Internals by Default [v6]

[Alan Bateman]

On Wed, 25 Nov 2020 23:50:14 GMT, Mark Reinhold <mr at openjdk.org> wrote:

>> Please review this implementation of JEP 396 (https://openjdk.java.net/jeps/396).
>> Alan Bateman is the original author; I’ve credited him in the commit metadata.
>> Passes tiers 1-3 on {linux,macos,windows}-x64 and linux-aarch64.
>
> Mark Reinhold has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix "Add-Exports" case for the setAccessibleNonPublicMemberNonExportedPackage test (v2)

Marked as reviewed by alanb (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/1324