hg: shenandoah/jdk: Fix ShHeap::notify_alloc usages: it accepts words, not bytes

[shade at redhat.com]

Changeset: cc44eb50217a
Author:    shade
Date:      2018-08-22 11:24 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/cc44eb50217a

Fix ShHeap::notify_alloc usages: it accepts words, not bytes

! src/hotspot/share/gc/shenandoah/shenandoahFreeSet.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp