Move builtin JavaScript sources into own directory.

src/harmony-reflect.js

Index: src/harmony-reflect.js
diff --git a/src/harmony-reflect.js b/src/harmony-reflect.js
deleted file mode 100644
index f1fe8605e54b090679afb867c0de14feeb30c076..0000000000000000000000000000000000000000
--- a/src/harmony-reflect.js
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-(function(global, utils) {
-
-'use strict';
-
-%CheckIsBootstrapping();
-
-var GlobalReflect = global.Reflect;
-var ReflectApply = utils.ImportNow("reflect_apply");
-var ReflectConstruct = utils.ImportNow("reflect_construct");
-
-utils.InstallFunctions(GlobalReflect, DONT_ENUM, [
-  "apply", ReflectApply,
-  "construct", ReflectConstruct
-]);
-
-})