hg: shenandoah/jdk: Check and ensure that Shenandoah-enabled compilations succeed

[ashipile at redhat.com]

Changeset: 75a644780460
Author:    shade
Date:      2018-08-01 16:05 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/75a644780460

Check and ensure that Shenandoah-enabled compilations succeed

! src/hotspot/share/compiler/compileBroker.cpp
! src/hotspot/share/gc/shenandoah/shenandoahArguments.cpp
! src/hotspot/share/gc/shenandoah/shenandoah_globals.hpp