8179222: SimpleConsoleLogger should protect against MissingResourceException
Summary: SimpleConsoleLogger now emulates the behaviour of java.util.logging.Formatter, trapping MissingResourceException and using the key as the message if the ResourceBundle has no match for that key.
Reviewed-by: naoto

8177530: Module system implementation refresh (4/2017)
Reviewed-by: mchung, alanb
Contributed-by: alan.bateman@oracle.com, mandy.chung@oracle.com

8177835: System.LoggerFinder#getLogger or getLocalizedLogger does not throw NPE
Reviewed-by: rriggs, mchung