hg: jdk/sandbox: 8228858: Reimplement JVM_RawMonitors to use PlatformMutex

[chris.hegarty at oracle.com]

Changeset: 7284b00e6db3
Author:    dholmes
Date:      2019-08-14 18:26 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/7284b00e6db3

8228858: Reimplement JVM_RawMonitors to use PlatformMutex
Reviewed-by: coleenp, dcubed, pchilanomate

! src/hotspot/share/prims/jvm.cpp
! src/hotspot/share/runtime/mutex.cpp
! src/hotspot/share/runtime/mutex.hpp
! src/hotspot/share/runtime/park.cpp