log4j syslog appender don't load, closes elastic#527.

Author: kimchy

modules/elasticsearch/src/main/java/org/elasticsearch/common/logging/log4j/LogConfigurator.java

@@ -45,17 +45,17 @@ public class LogConfigurator {
             .put("dailyRollingFile", "org.apache.log4j.DailyRollingFileAppender")
             .put("externallyRolledFile", "org.apache.log4j.ExternallyRolledFileAppender")
             .put("file", "org.apache.log4j.FileAppender")
-            .put("jdbc", "org.apache.log4j.JDBCAppender")
-            .put("jms", "org.apache.log4j.JMSAppender")
-            .put("lf5", "org.apache.log4j.LF5Appender")
-            .put("ntevent", "org.apache.log4j.NTEventLogAppender")
+            .put("jdbc", "org.apache.log4j.jdbc.JDBCAppender")
+            .put("jms", "org.apache.log4j.net.JMSAppender")
+            .put("lf5", "org.apache.log4j.lf5.LF5Appender")
+            .put("ntevent", "org.apache.log4j.nt.NTEventLogAppender")
             .put("null", "org.apache.log4j.NullAppender")
             .put("rollingFile", "org.apache.log4j.RollingFileAppender")
-            .put("smtp", "org.apache.log4j.SMTPAppender")
-            .put("socket", "org.apache.log4j.SocketAppender")
-            .put("socketHub", "org.apache.log4j.SocketHubAppender")
-            .put("syslog", "org.apache.log4j.SyslogAppender")
-            .put("telnet", "org.apache.log4j.TelnetAppender")
+            .put("smtp", "org.apache.log4j.net.SMTPAppender")
+            .put("socket", "org.apache.log4j.net.SocketAppender")
+            .put("socketHub", "org.apache.log4j.net.SocketHubAppender")
+            .put("syslog", "org.apache.log4j.net.SyslogAppender")
+            .put("telnet", "org.apache.log4j.net.TelnetAppender")
                     // layouts
             .put("simple", "org.apache.log4j.SimpleLayout")
             .put("html", "org.apache.log4j.HTMLLayout")