bug 1188648 - Use HOST_LOG env var to log gecko output when running Gij on _all_ gecko builds. r=jgriffin
bug 1188648 - Use HOST_LOG env var to log gecko output when running Gij on _all_ gecko builds. r=jgriffin

mozilla/build-mozharness,lissyx/build-mozharness,lissyx/build-mozharness,mozilla/build-mozharness