Added missing JavaDoc for the classes in org.jboss.netty.logging

src/main/java/org/jboss/netty/logging/CommonsLogger.java

@@ -25,6 +25,9 @@ package org.jboss.netty.logging;
 import org.apache.commons.logging.Log;
 
 /**
+ * <a href="http://commons.apache.org/logging/">Apache Commons Logging</a>
+ * logger.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *

src/main/java/org/jboss/netty/logging/JBossLogger.java

@@ -25,6 +25,9 @@ package org.jboss.netty.logging;
 import org.jboss.logging.Logger;
 
 /**
+ * <a href="http://anonsvn.jboss.org/repos/common/common-logging-spi/">JBoss Logging</a>
+ * logger.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *

src/main/java/org/jboss/netty/logging/JdkLogger.java

@@ -26,6 +26,9 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
+ * <a href="http://java.sun.com/javase/6/docs/technotes/guides/logging/index.html">java.util.logging</a>
+ * logger.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *

src/main/java/org/jboss/netty/logging/Log4JLogger.java

@@ -25,6 +25,9 @@ package org.jboss.netty.logging;
 import org.apache.log4j.Logger;
 
 /**
+ * <a href="http://logging.apache.org/log4j/1.2/index.html">Apache Log4J</a>
+ * logger.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *

src/main/java/org/jboss/netty/logging/Slf4JLogger.java

@@ -25,6 +25,8 @@ package org.jboss.netty.logging;
 import org.slf4j.Logger;
 
 /**
+ * <a href="http://www.slf4j.org/">SLF4J</a> logger.
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  *