hg: jdk/sandbox: 8240590: Add MemRegion::destroy_array to complement introduced create_array

[chris.hegarty at oracle.com]

Changeset: 89ec93d09e7e
Author:    tschatzl
Date:      2020-03-20 11:17 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/89ec93d09e7e

8240590: Add MemRegion::destroy_array to complement introduced create_array
Reviewed-by: lkorinth, sjohanss

! src/hotspot/share/gc/g1/g1ConcurrentMark.cpp
! src/hotspot/share/gc/shared/cardTable.cpp
! src/hotspot/share/memory/filemap.cpp
! src/hotspot/share/memory/memRegion.cpp
! src/hotspot/share/memory/memRegion.hpp