hg: shenandoah/jdk8u/hotspot: [backport] Nit: mark-compact phase 3 (Adjust Pointers) should announce itself as "Phase 3"

[ashipile at redhat.com]

Changeset: 55bf3165ec19
Author:    shade
Date:      2017-05-09 13:32 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/55bf3165ec19

[backport] Nit: mark-compact phase 3 (Adjust Pointers) should announce itself as "Phase 3"

! src/share/vm/gc_implementation/shenandoah/shenandoahMarkCompact.cpp