hg: amber/amber: Automatic merge with default

[john.r.rose at oracle.com]

Changeset: 80fe672bc88c
Author:    jrose
Date:      2017-09-03 23:44 -0700
URL:       http://hg.openjdk.java.net/amber/amber/rev/80fe672bc88c

Automatic merge with default

- common/autoconf/lib-elf.m4