Added Wolf.isTamed().

src/main/java/org/bukkit/entity/Wolf.java

@@ -34,5 +34,12 @@ public interface Wolf extends Animals, Tameable {
      * @param sitting true if sitting
      */
     public void setSitting(boolean sitting);
+    
+    /**
+     * Tells whether this wolf has an owner
+     * 
+     * @return
+     */
+    public boolean isTamed();
 
 }