hg: amber/amber: Automatic merge with records-and-sealed

[maurizio.cimadamore at oracle.com]

Changeset: 51781035a19a
Author:    mcimadamore
Date:      2019-09-10 13:54 +0000
URL:       https://hg.openjdk.java.net/amber/amber/rev/51781035a19a

Automatic merge with records-and-sealed