hg: jdk/sandbox: 8226586: Shenandoah: No need to pre-evacuate roots for degenerated GC

[chris.hegarty at oracle.com]

Changeset: c9e362aef472
Author:    zgu
Date:      2019-06-24 09:51 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/c9e362aef472

8226586: Shenandoah: No need to pre-evacuate roots for degenerated GC
Reviewed-by: rkennke

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