Ensure that bound functions does not have a prototype (fixes issue 794)

test/mjsunit/function-bind.js

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 44 matching lines @@
 assertEquals(0, f.length);
 
 // Use a different bound object.
 var obj = {x: 42, y: 43};
 // Values that would normally be in "this" when calling f_bound_this.
 var x = 42;
 var y = 44;
 
 function f_bound_this(z) {
   return z + this.y - this.x;
-} 
+}
 
 assertEquals(3, f_bound_this(1))
 f = f_bound_this.bind(obj);
 assertEquals(2, f(1));
 assertEquals(1, f.length);
 
 f = f_bound_this.bind(obj, 2);
 assertEquals(3, f());
 assertEquals(0, f.length);
 
 // Test chained binds.
 
-// When only giving the thisArg, any number of binds should have 
+// When only giving the thisArg, any number of binds should have
 // the same effect.
 f = foo.bind(foo);
 assertEquals(3, f(1, 1, 1));
 f = foo.bind(foo).bind(foo).bind(foo).bind(foo);
 assertEquals(3, f(1, 1, 1));
 assertEquals(3, f.length);
 
 // Giving bound parameters should work at any place in the chain.
 f = foo.bind(foo, 1).bind(foo).bind(foo).bind(foo);
 assertEquals(3, f(1, 1));
@@ skipping 85 matching lines @@
 
 f = bar.bind(bar, 1).bind(bar, 2).bind(bar, 3);
 obj2 = new f();
 assertEquals(1, obj2.x);
 assertEquals(2, obj2.y);
 assertEquals(3, obj2.z);
 
 // Test instanceof obj2 is bar, not f.
 assertTrue(obj2 instanceof bar);
 assertFalse(obj2 instanceof f);
-