hg: amber/amber: Automatic merge with default

[maurizio.cimadamore at oracle.com]

Changeset: 71a50345acc0
Author:    mcimadamore
Date:      2019-01-24 22:07 +0100
URL:       http://hg.openjdk.java.net/amber/amber/rev/71a50345acc0

Automatic merge with default

! make/Main.gmk
! make/RunTests.gmk
! make/autoconf/spec.gmk.in
! make/autoconf/toolchain.m4
! src/hotspot/share/ci/ciEnv.cpp
- test/Makefile
- test/TestCommon.gmk
- test/hotspot/jtreg/Makefile
- test/jaxp/Makefile
- test/jdk/Makefile
- test/langtools/Makefile
- test/nashorn/Makefile