Fix for .bind regression.

test/mjsunit/regress/regress-bind-receiver.js

+function strict() { 'use strict'; return this; }
+function lenient() { return this; }
+var obj = {};
+        
+assertEquals(strict.bind(true)(), true);

[Jakob Kummerow, 2011/09/13 17:09:54]

assertEquals takes the expected value as the first parameter and the actual
value as the second. (Less confusing error messages)++ ;-)

[rossberg, 2011/09/13 17:14:00]

Done. (Had C&P'ed this from Webkit.)

+assertEquals(strict.bind(42)(), 42);
+assertEquals(strict.bind("")(), "");
+assertEquals(strict.bind(null)(), null);
+assertEquals(strict.bind(undefined)(), undefined);
+assertEquals(strict.bind(obj)(), obj);
+
+assertEquals(lenient.bind(true)() instanceof Boolean, true);
+assertEquals(lenient.bind(42)() instanceof Number, true);
+assertEquals(lenient.bind("")() instanceof String, true);
+assertEquals(lenient.bind(null)(), this);
+assertEquals(lenient.bind(undefined)(), this);
+assertEquals(lenient.bind(obj)(), obj);
+