Summary: NMT value objects should use VALUE_OBJ_CLASS_SPEC instead of deriving from _ValueObj
Reviewed-by: coleenp, hseigel, dholmes

8004845: Catch incorrect usage of new and delete during compile time for value objects and stack objects
Summary: Makes the "new" and "delete" operator of _ValueObj and StackObj private
Reviewed-by: dholmes, coleenp
Contributed-by: erik.helin@oracle.com

Summary: Enhanced virtual memory tracking to track committed regions as well as reserved regions, so NMT now can generate virtual memory map.
Reviewed-by: acorn, coleenp

7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain