8076441: Dead code in java.time.chrono.Chronology.isLeapYear after fixing JDK-8067800
Reviewed-by: igerasim, rriggs
Contributed-by: nadeesh.tv@oracle.com
7113878: LogManager - namedLoggers should be ConcurrentHashMap instead of Hashtable
Summary: namedLoggers is now a ConcurrentHashMap. findLogger is updated to take benefit of the change.
Reviewed-by: dholmes, lancea, martin, mchung, plevart
Contributed-by: Peter Levart <peter.levart@gmail.com>, Daniel Fuchs <daniel.fuchs@oracle.com>