Use system.err instead of Log since Log is not in classpath of serverstarter.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@3518 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/wildfire/starter/ServerStarter.java

@@ -156,7 +156,7 @@ public class ServerStarter {
                 unpacked = true;
             }
             catch (Exception e) {
-                Log.error(e);
+                e.printStackTrace();
             }
         }
         // Print newline if unpacking happened.