hg: amber/amber: Automatic merge with default

[maurizio.cimadamore at oracle.com]

Changeset: 3120d24038de
Author:    langtools at sthdev02.uk.oracle.com
Date:      2017-09-01 00:02 +0200
URL:       http://hg.openjdk.java.net/amber/amber/rev/3120d24038de

Automatic merge with default

- common/autoconf/lib-elf.m4