DUBBO-344 log4j优先，保证测试用例通过

git-svn-id: http://code.alibabatech.com/svn/dubbo/trunk@1585 1a56cb94-b969-4eaa-88fa-be21384802f2

dubbo-common/src/main/java/com/alibaba/dubbo/common/logger/LoggerFactory.java

@@ -41,13 +41,13 @@ public class LoggerFactory {
 	    //setLoggerAdapter(System.getProperty("dubbo.application.logger"));
 	    //if (LOGGER_ADAPTER == null) {
     		try {
-                setLoggerAdapter(new Slf4jLoggerAdapter());
+    		    setLoggerAdapter(new Log4jLoggerAdapter());
             } catch (Throwable e1) {
                 try {
-                    setLoggerAdapter(new JclLoggerAdapter());
+                    setLoggerAdapter(new Slf4jLoggerAdapter());
                 } catch (Throwable e2) {
                     try {
-                        setLoggerAdapter(new Log4jLoggerAdapter());
+                        setLoggerAdapter(new JclLoggerAdapter());
                     } catch (Throwable e3) {
                         setLoggerAdapter(new JdkLoggerAdapter());
                     }