Update to SCons 1.2.0.

third_party/scons/scons-local/SCons/compat/__init__.py

 #
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
 # "Software"), to deal in the Software without restriction, including
 # without limitation the rights to use, copy, modify, merge, publish,
 # distribute, sublicense, and/or sell copies of the Software, and to
 # permit persons to whom the Software is furnished to do so, subject to
 # the following conditions:
@@ skipping 42 matching lines @@
 
 We name the compatibility modules with an initial '_scons_' (for example,
 _scons_subprocess.py is our compatibility module for subprocess) so
 that we can still try to import the real module name and fall back to
 our compatibility module if we get an ImportError.  The import_as()
 function defined below loads the module as the "real" name (without the
 '_scons'), after which all of the "import {module}" statements in the
 rest of our code will find our pre-loaded compatibility module.
 """
 
-__revision__ = "src/engine/SCons/compat/__init__.py 3603 2008/10/10 05:46:45 scons"
+__revision__ = "src/engine/SCons/compat/__init__.py 3842 2008/12/20 22:59:52 scons"
 
 def import_as(module, name):
     """
     Imports the specified module (from our local directory) as the
     specified name.
     """
     import imp
     import os.path
     dir = os.path.split(__file__)[0]
     file, filename, suffix_mode_type = imp.find_module(module, [dir])
@@ skipping 74 matching lines @@
 except ImportError:
     # Pre-2.3 Python has no textwrap module.
     import_as('_scons_textwrap', 'textwrap')
 
 try:
     import optparse
 except ImportError:
     # Pre-2.3 Python has no optparse module.
     import_as('_scons_optparse', 'optparse')
 
+import os
+try:
+    os.devnull
+except AttributeError:
+    # Pre-2.4 Python has no os.devnull attribute
+    import sys
+    _names = sys.builtin_module_names
+    if 'posix' in _names:
+        os.devnull = '/dev/null'
+    elif 'nt' in _names:
+        os.devnull = 'nul'
+    os.path.devnull = os.devnull
+
 import shlex
 try:
     shlex.split
 except AttributeError:
     # Pre-2.3 Python has no shlex.split() function.
     #
     # The full white-space splitting semantics of shlex.split() are
     # complicated to reproduce by hand, so just use a compatibility
     # version of the shlex module cribbed from Python 2.5 with some
     # minor modifications for older Python versions.
@@ skipping 54 matching lines @@
     import string
     version_string = string.split(sys.version)[0]
     version_ints = map(int, string.split(version_string, '.'))
     sys.version_info = tuple(version_ints + ['final', 0])
 
 try:
     import UserString
 except ImportError:
     # Pre-1.6 Python has no UserString module.
     import_as('_scons_UserString', 'UserString')