Added cloning constructor.

src/altk/comm/engine/Recipient.java

@@ -33,5 +33,12 @@ public class Recipient
         this.activity_record_id = activity_record_id;
         this.attributes = attributes;
     }
+    
+    public Recipient(Recipient recipient)
+    {
+        contact_id = recipient.contact_id;
+        activity_record_id = recipient.activity_record_id;
+        attributes = recipient.attributes;
+    }
 
 }