hg: jdk/jdk: 8245240: Shenandoah: support nesting evacuation OOM scope

[zgu at redhat.com]

Changeset: 8ef08563699c
Author:    zgu
Date:      2020-05-20 17:16 -0400
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/8ef08563699c

8245240: Shenandoah: support nesting evacuation OOM scope
Reviewed-by: shade, rkennke

! src/hotspot/share/gc/shenandoah/shenandoahEvacOOMHandler.cpp
! src/hotspot/share/gc/shenandoah/shenandoahThreadLocalData.hpp