git: openjdk/mobile: 8241793: Shenandoah: Enable concurrent class unloading for aarch64

[duke]

Changeset: 22786803
Author:    Zhengyu Gu <zgu at openjdk.org>
Date:      2020-04-30 14:00:50 +0000
URL:       https://git.openjdk.java.net/mobile/commit/22786803

8241793: Shenandoah: Enable concurrent class unloading for aarch64

Reviewed-by: smonteith, rkennke

! src/hotspot/share/gc/shenandoah/shenandoahConcurrentRoots.cpp
! test/hotspot/jtreg/gc/stress/gcbasher/TestGCBasherWithShenandoah.java