hg: amber/amber: Automatic merge with jep-334

[maurizio.cimadamore at oracle.com]

Changeset: 7c6f7d72a976
Author:    mcimadamore
Date:      2018-11-06 21:00 +0100
URL:       http://hg.openjdk.java.net/amber/amber/rev/7c6f7d72a976

Automatic merge with jep-334

! src/java.base/share/classes/java/lang/String.java