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

[maurizio.cimadamore at oracle.com]

Changeset: 9e9589c89358
Author:    langtools
Date:      2017-05-05 16:01 +0200
URL:       http://hg.openjdk.java.net/amber/amber/langtools/rev/9e9589c89358

Automatic merge with default