hg: jdk10/hs/hotspot: 8186089: Move Arena to its own header file

[harold.seigel at oracle.com]

Changeset: 8fe3f9691b33
Author:    hseigel
Date:      2017-08-16 11:17 -0400
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/8fe3f9691b33

8186089: Move Arena to its own header file
Summary: Move classes Chunk and Arena to new arena.hpp and arena.cpp files
Reviewed-by: coleenp, gtriantafill

! src/share/vm/memory/allocation.cpp
! src/share/vm/memory/allocation.hpp
+ src/share/vm/memory/arena.cpp
+ src/share/vm/memory/arena.hpp
! src/share/vm/precompiled/precompiled.hpp
! src/share/vm/runtime/commandLineFlagConstraintList.cpp
! src/share/vm/runtime/handles.hpp
! src/share/vm/runtime/vmStructs.cpp