Commented a few classes as abstract,

debugging..


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3878 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/presents/net/Credentials.as

@@ -8,7 +8,7 @@ import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
 import com.threerings.io.Streamable;
 
-public class Credentials
+public /* abstract */ class Credentials
     implements Streamable
 {
     public function Credentials (username :Name)

src/as/com/threerings/presents/net/DownstreamMessage.as

@@ -6,7 +6,7 @@ import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
 import com.threerings.io.Streamable;
 
-public class DownstreamMessage
+public /* abstract */ class DownstreamMessage
     implements Streamable
 {
     /** The message id of the upstream message with which this downstream

src/as/com/threerings/presents/net/UpstreamMessage.as

@@ -8,7 +8,7 @@ import com.threerings.io.ObjectOutputStream;
 
 import com.threerings.util.JavaConstants;
 
-public class UpstreamMessage
+public /* abstract */ class UpstreamMessage
     implements Streamable
 {
     /** This is a unique (within the context of a reasonable period