hg: jigsaw/jake/jdk: Cache Version in jdk.internal.module.Builder, allowing us to cheaply ensure we only create one Version for a JRE/JDK image.

[mandy.chung at oracle.com]

Changeset: aff1c58b616e
Author:    redestad
Date:      2016-02-10 17:12 +0100
URL:       http://hg.openjdk.java.net/jigsaw/jake/jdk/rev/aff1c58b616e

Cache Version in jdk.internal.module.Builder, allowing us to cheaply ensure we only create one Version for a JRE/JDK image.

! src/java.base/share/classes/jdk/internal/module/Builder.java