Added check for trailing whitespaces and corrected existing violations.

test/mjsunit/regress/regress-696.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 10 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // See: http://code.google.com/p/v8/issues/detail?id=696
 // Because of the change in dateparser in revision 4557 to support time
 // only strings in Date.parse we also misleadingly supported strings with non
-// leading numbers. 
+// leading numbers.
 
 assertTrue(isNaN(Date.parse('x')));
 assertTrue(isNaN(Date.parse('1x')));
 assertTrue(isNaN(Date.parse('xT10:00:00')));
 assertTrue(isNaN(Date.parse('This is a relatively long string')));