hg: amber/amber/langtools: Automatic merge with default

[maurizio.cimadamore at oracle.com]

Changeset: d571d1ea7917
Author:    langtools at sthdev02.uk.oracle.com
Date:      2017-05-18 23:56 +0200
URL:       http://hg.openjdk.java.net/amber/amber/langtools/rev/d571d1ea7917

Automatic merge with default