Added the keys() function to the Map interface, replaced instances of

SimpleMap with HashMap. Discarded SimpleMap.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4122 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/util/Byte.as

@@ -18,5 +18,11 @@ public class Byte
     {
         return (other is Byte) && (value === (other as Byte).value);
     }
+
+    // documentation inherited
+    public function toString () :String
+    {
+        return "Byte(" + value + ")";
+    }
 }
 }