8023669: MBean*Info.hashCode : NPE
Reviewed-by: dholmes, dfuchs, jbachorik
8024356: Double.parseDouble() is slow for long Strings
Summary: Clamp nDigits to MAX_NDIGITS.
Reviewed-by: bpb, drchase, shade
Contributed-by: Dmitry Nadezhin <dmitry.nadezhin@oracle.com>