Fix trailing whitespace in scripts and misc. files

Tools/Scripts/ensure-valid-python

 #!/usr/bin/perl -w
 # Copyright (C) 2010 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 #
 # 1.  Redistributions of source code must retain the above copyright
-#     notice, this list of conditions and the following disclaimer. 
+#     notice, this list of conditions and the following disclaimer.
 # 2.  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 with the distribution. 
+#     documentation and/or other materials provided with the distribution.
 # 3.  Neither the name of Apple Inc. ("Apple") nor the names of
 #     its contributors may be used to endorse or promote products derived
-#     from this software without specific prior written permission. 
+#     from this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 # DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 # DIRECT, INDIRECT, INCIDENTAL, 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
@@ skipping 34 matching lines @@
     return 0 if checkPythonVersion();
 
     return 1 if $checkOnly;
 
     print "Your Python version is insufficient to run WebKit's Python code.  Please update.\n";
     print "See http://trac.webkit.org/wiki/PythonGuidelines for more info.\n";
     return 1;
 }
 
 exit(main());