Reverting r4329 due to failure in webkit tests.

test/mjsunit/parse-int-float.js

 // Copyright 2008 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 24 matching lines @@
 assertEquals(-63, parseInt('  -077'));
 
 assertEquals(3, parseInt('11', 2));
 assertEquals(4, parseInt('11', 3));
 assertEquals(4, parseInt('11', 3.8));
 
 assertEquals(0x12, parseInt('0x12'));
 assertEquals(0x12, parseInt('0x12', 16));
 assertEquals(0x12, parseInt('0x12', 16.1));
 assertEquals(0x12, parseInt('0x12', NaN));
-assertTrue(isNaN(parseInt('0x  ')));
-assertTrue(isNaN(parseInt('0x')));
-assertTrue(isNaN(parseInt('0x  ', 16)));
-assertTrue(isNaN(parseInt('0x', 16)));
+
 assertEquals(12, parseInt('12aaa'));
 
 assertEquals(0.1, parseFloat('0.1'));
 assertEquals(0.1, parseFloat('0.1aaa'));
 assertEquals(0, parseFloat('0aaa'));
 assertEquals(0, parseFloat('0x12'));
 assertEquals(77, parseFloat('077'));
 
 
 var i;
@@ skipping 21 matching lines @@
 
 assertTrue(isNaN(parseInt(0/0)));
 assertTrue(isNaN(parseInt(1/0)), "parseInt Infinity");
 assertTrue(isNaN(parseInt(-1/0)), "parseInt -Infinity");
 
 assertTrue(isNaN(parseFloat(0/0)));
 assertEquals(Infinity, parseFloat(1/0), "parseFloat Infinity");
 assertEquals(-Infinity, parseFloat(-1/0), "parseFloat -Infinity");