Added readLong and writeLong to our streaming classes.

Use that in PongResponse.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5358 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/io/ObjectInputStream.as

@@ -29,6 +29,7 @@ import flash.utils.IDataInput;
 
 import com.threerings.util.ClassUtil;
 import com.threerings.util.Log;
+import com.threerings.util.Long;
 
 public class ObjectInputStream
 {
@@ -209,6 +210,13 @@ public class ObjectInputStream
         return _source.readFloat();
     }
 
+    public function readLong () :Long
+    {
+        const result :Long = new Long();
+        readBareObject(result);
+        return result;
+    }
+
     public function readInt () :int
         //throws IOError
     {