RFR: 8255125: [Development] copy jdk.internal.ValueBased to jep390 branch

[Mandy Chung]

On Wed, 21 Oct 2020 13:48:41 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> Commit a copy of the ValueBased.java and its uses to the JEP 390 branch.

The initial patch looks okay that will allow javac and VM change to proceed.

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Marked as reviewed by mchung (Reviewer).

PR: https://git.openjdk.java.net/valhalla/pull/235