Fix trailing whitespace in scripts and misc. files

Tools/Scripts/webkitpy/common/net/credentials_unittest.py

 # Copyright (C) 2009 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:
 #
 #    * 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
@@ skipping 59 matching lines @@
     "atyp"<blob>="form"
     "cdat"<timedate>=0x32303039303832353233353231365A00  "20090825235216Z\000"
     "crtr"<uint32>=<NULL>
     "cusi"<sint32>=<NULL>
     "desc"<blob>="Web form password"
     "icmt"<blob>="default"
     "invi"<sint32>=<NULL>
     "mdat"<timedate>=0x32303039303930393137323635315A00  "20090909172651Z\000"
     "nega"<sint32>=<NULL>
     "path"<blob>=<NULL>
-    "port"<uint32>=0x00000000 
+    "port"<uint32>=0x00000000
     "prot"<blob>=<NULL>
     "ptcl"<uint32>="htps"
     "scrp"<sint32>=<NULL>
     "sdmn"<blob>=<NULL>
     "srvr"<blob>="bugs.webkit.org"
     "type"<uint32>=<NULL>
 password: "SECRETSAUCE"
 """
 
     def test_keychain_lookup_on_non_mac(self):
@@ skipping 108 matching lines @@
 
             @classmethod
             def prompt_password(cls, message, repeat=1, raw_input=raw_input):
                 raise AssertionError("should not prompt for password")
 
         with _TemporaryDirectory(suffix="not_a_git_repo") as temp_dir_path:
             credentials = FakeCredentials("fake.hostname", cwd=temp_dir_path, keyring=MockKeyring())
             # FIXME: Using read_credentials here seems too broad as higher-priority
             # credential source could be affected by the user's environment.
             self.assertEqual(credentials.read_credentials(FakeUser), ("test@webkit.org", "NOMNOMNOM"))