8003553: NPG: metaspace objects should be zeroed in constructors Summary: Zero metadata in constructors, not in allocation (and some in constructors) Reviewed-by: jmasa, sspitsyn

8008257: NMT: assert(new_rec->is_allocation_record()) failed when running with shared memory option Summary: Corrected virtual memory recording and tagging code when large pages are used Reviewed-by: coleenp, ccheung