Fix trailing whitespace in scripts and misc. files

Tools/Scripts/webkitpy/thirdparty/unittest2/compatibility.py

 import os
 import sys
 
 try:
     from functools import wraps
 except ImportError:
     # only needed for Python 2.4
     def wraps(_):
         def _wraps(func):
             return func
@@ skipping 28 matching lines @@
     if not rel_list:
         return os.path.curdir
     return os.path.join(*rel_list)
 
 # default to posixpath definition
 def _relpath_posix(path, start=os.path.curdir):
     """Return a relative version of a path"""
 
     if not path:
         raise ValueError("no path specified")
-    
+
     start_list = os.path.abspath(start).split(os.path.sep)
     path_list = os.path.abspath(path).split(os.path.sep)
 
     # Work out how much of the filepath is shared by start and path.
     i = len(os.path.commonprefix([start_list, path_list]))
 
     rel_list = [os.path.pardir] * (len(start_list)-i) + path_list[i:]
     if not rel_list:
         return os.path.curdir
     return os.path.join(*rel_list)
 
 if os.path is sys.modules.get('ntpath'):
     relpath = _relpath_nt
 else:
     relpath = _relpath_posix