hg: jdk/jdk: 8210065: ZGC: Remove mode for treating weaks as strong

[erik.osterlund at oracle.com]

Changeset: 3aaf039a3636
Author:    eosterlund
Date:      2018-08-30 09:25 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/3aaf039a3636

8210065: ZGC: Remove mode for treating weaks as strong
Reviewed-by: kbarrett, pliden

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