hg: amber/amber: adding class java.lang.Record

[vicente.romero at oracle.com]

Changeset: 6f214db52b77
Author:    briangoetz
Date:      2019-08-15 13:48 -0400
URL:       https://hg.openjdk.java.net/amber/amber/rev/6f214db52b77

adding class java.lang.Record

+ src/java.base/share/classes/java/lang/Record.java