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

[maurizio.cimadamore at oracle.com]

Changeset: 4b34e6916484
Author:    langtools
Date:      2017-05-12 17:30 +0200
URL:       http://hg.openjdk.java.net/amber/amber/langtools/rev/4b34e6916484

Automatic merge with default