Add a warning if the current version of python is not 2.5

fix_encoding.py

 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Collection of functions and classes to fix various encoding problems on
 multiple platforms with python.
 """
 
 import codecs
 import locale
@@ skipping 169 matching lines @@
   Understands how to use the win32 console API.
   """
   def __init__(self, console_handle, fileno, stream_name, encoding):
     super(WinUnicodeConsoleOutput, self).__init__(
         fileno, '<Unicode console %s>' % stream_name, encoding)
     # Handle to use for WriteConsoleW
     self._console_handle = console_handle
 
     # Loads the necessary function.
     from ctypes import byref, GetLastError, POINTER, windll, WINFUNCTYPE
-    from ctypes.wintypes import BOOL, DWORD, HANDLE, LPVOID, LPWSTR
+    from ctypes.wintypes import BOOL, DWORD, HANDLE, LPWSTR
+    from ctypes.wintypes import LPVOID  # pylint: disable=E0611
 
     self._DWORD = DWORD
     self._byref = byref
 
     # <http://msdn.microsoft.com/en-us/library/ms687401.aspx>
     self._WriteConsoleW = WINFUNCTYPE(
         BOOL, HANDLE, LPWSTR, DWORD, POINTER(DWORD), LPVOID)(
             ('WriteConsoleW', windll.kernel32))
     self._GetLastError = GetLastError
 
@@ skipping 152 matching lines @@
   if sys.platform == 'win32':
     ret &= fix_win_codec()
 
   ret &= fix_default_encoding()
 
   if sys.platform == 'win32':
     encoding = sys.getdefaultencoding()
     ret &= fix_win_sys_argv(encoding)
     ret &= fix_win_console(encoding)
   return ret