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

[maurizio.cimadamore at oracle.com]

Changeset: 72d9132ff359
Author:    langtools
Date:      2017-04-22 02:56 +0200
URL:       http://hg.openjdk.java.net/amber/amber/langtools/rev/72d9132ff359

Automatic merge with default