hg: jdk/hs: 8191369: NMT: Enhance thread stack tracking

[coleen.phillimore at oracle.com]

Changeset: c3ec048aad63
Author:    zgu
Date:      2018-03-01 16:35 -0500
URL:       http://hg.openjdk.java.net/jdk/hs/rev/c3ec048aad63

8191369: NMT: Enhance thread stack tracking
Summary: More precise thread stack tracking on Linux and Windows
Reviewed-by: coleenp, adinn, minqi

! src/hotspot/os/linux/os_linux.cpp
! src/hotspot/os/windows/os_windows.cpp
! src/hotspot/share/runtime/os.cpp
! src/hotspot/share/runtime/os.hpp
! src/hotspot/share/services/memTracker.hpp
! src/hotspot/share/services/virtualMemoryTracker.cpp
! src/hotspot/share/services/virtualMemoryTracker.hpp
+ test/hotspot/gtest/runtime/test_threadstack_tracking.cpp