Make -q and -v do something more sensible

-q switches off all logging and the banner, -v switches logging to debug,
running with neither will be info.

Fixes gh-1108

spring-boot-cli/src/main/java/org/springframework/boot/cli/command/run/SpringApplicationRunner.java

@@ -67,8 +67,17 @@ public class SpringApplicationRunner {
 		this.sources = sources.clone();
 		this.args = args.clone();
 		this.compiler = new GroovyCompiler(configuration);
-		if (configuration.getLogLevel().intValue() <= Level.FINE.intValue()) {
+		int level = configuration.getLogLevel().intValue();
+		if (level <= Level.FINER.intValue()) {
 			System.setProperty("groovy.grape.report.downloads", "true");
+			System.setProperty("trace", "true");
+		}
+		else if (level <= Level.FINE.intValue()) {
+			System.setProperty("debug", "true");
+		}
+		else if (level == Level.OFF.intValue()) {
+			System.setProperty("spring.main.showBanner", "false");
+			System.setProperty("logging.level.ROOT", "OFF");
 		}
 	}
 

spring-boot/src/main/java/org/springframework/boot/logging/LoggingApplicationListener.java

@@ -206,13 +206,17 @@ public class LoggingApplicationListener implements SmartApplicationListener {
 		Map<String, Object> levels = new RelaxedPropertyResolver(environment)
 				.getSubProperties("logging.level.");
 		for (Entry<String, Object> entry : levels.entrySet()) {
+			String name = entry.getKey();
 			try {
 				LogLevel level = LogLevel.valueOf(entry.getValue().toString());
-				system.setLogLevel(entry.getKey(), level);
+				if (name.equalsIgnoreCase("root")) {
+					name = null;
+				}
+				system.setLogLevel(name, level);
 			}
 			catch (RuntimeException e) {
 				this.logger.error("Cannot set level: " + entry.getValue() + " for '"
-						+ entry.getKey() + "'");
+						+ name + "'");
 			}
 		}
 	}