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

[maurizio.cimadamore at oracle.com]

Changeset: 6734a62b8139
Author:    langtools
Date:      2017-04-27 08:22 +0200
URL:       http://hg.openjdk.java.net/amber/amber/langtools/rev/6734a62b8139

Automatic merge with default