Initialize Logger instances to the 'INFO' level by default

... otherwise, logging would throw an exception when trying to
determine whether the current level allows the message to be logged.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

classpath/java/util/logging/Logger.java

@@ -32,6 +32,7 @@ public class Logger {
     if (name.equals("")) return rootLogger;
     Logger logger = new Logger(name);
     logger.parent = rootLogger;
+    logger.setLevel(Level.INFO);
     return logger;
   }