Replace AddProperty by AddNamedProperty to speed up the common case

src/array.js

Index: src/array.js
diff --git a/src/array.js b/src/array.js
index ca91c69d2c47c2b9f69b32231a233ed3ac4de5e5..15cbbf21a6003a3336be6dd6e5f755154c510a28 100644
--- a/src/array.js
+++ b/src/array.js
@@ -1460,7 +1460,7 @@ function SetUpArray() {
 
   // Set up non-enumerable constructor property on the Array.prototype
   // object.
-  %AddProperty($Array.prototype, "constructor", $Array, DONT_ENUM);
+  %AddNamedProperty($Array.prototype, "constructor", $Array, DONT_ENUM);
 
   // Set up non-enumerable functions on the Array object.
   InstallFunctions($Array, DONT_ENUM, $Array(