Summary: Count number of instance classes so that it matches class metadata size
Reviewed-by: coleenp, acorn

Summary: Fixed NMT that miscounted arena memory when it is used as value or stack object.
Reviewed-by: acorn, coleenp

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