RFR: 8267630: Start of release updates for JDK 18

[Erik Joelsson]

On Mon, 24 May 2021 22:35:04 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> 8267630: Start of release updates for JDK 18

Build change looks good.

Please be aware of the incoming change https://bugs.openjdk.java.net/browse/JDK-8263468 which will add another version field to version-numbers.conf, which may need to be updated too. The exact policy around that is still unclear though.

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Marked as reviewed by erikj (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/4175