hg: shenandoah/jdk9/hotspot: enable small array copy optimization when no oop is copied

[rwestrel at redhat.com]

Changeset: cf41c9d0aecb
Author:    roland
Date:      2017-03-16 17:48 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/cf41c9d0aecb

enable small array copy optimization when no oop is copied

! src/share/vm/opto/arraycopynode.cpp
! src/share/vm/runtime/arguments.cpp