hg: jdk/jdk: 8213623: ZGC: Let heap iteration walk all roots

[per.liden at oracle.com]

Changeset: b55c5c0ee24f
Author:    pliden
Date:      2018-11-20 08:17 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/b55c5c0ee24f

8213623: ZGC: Let heap iteration walk all roots
Reviewed-by: eosterlund, kbarrett

! src/hotspot/share/gc/z/zHeapIterator.cpp
! src/hotspot/share/gc/z/zRootsIterator.hpp