hg: jdk10/hs/hotspot: 8157709: NMT should use size_t version of Atomic::add

[david.holmes at oracle.com]

Changeset: df8746afee77
Author:    dholmes
Date:      2017-02-13 19:10 -0500
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/df8746afee77

8157709: NMT should use size_t version of Atomic::add
Reviewed-by: kbarrett, sspitsyn

! src/share/vm/runtime/atomic.hpp
! src/share/vm/services/mallocTracker.hpp
! src/share/vm/services/nmtCommon.hpp