Added an unmodified copy of SCons to third_party.

scons-2.0.1/engine/SCons/Sig.py

+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 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:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "src/engine/SCons/Sig.py 5134 2010/08/16 23:02:40 bdeegan"
+
+__doc__ = """Place-holder for the old SCons.Sig module hierarchy
+
+This is no longer used, but code out there (such as the NSIS module on
+the SCons wiki) may try to import SCons.Sig.  If so, we generate a warning
+that points them to the line that caused the import, and don't die.
+
+If someone actually tried to use the sub-modules or functions within
+the package (for example, SCons.Sig.MD5.signature()), then they'll still
+get an AttributeError, but at least they'll know where to start looking.
+"""
+
+import SCons.Util
+import SCons.Warnings
+
+msg = 'The SCons.Sig module no longer exists.\n' \
+      '    Remove the following "import SCons.Sig" line to eliminate this warning:'
+
+SCons.Warnings.warn(SCons.Warnings.DeprecatedSigModuleWarning, msg)
+
+default_calc = None
+default_module = None
+
+class MD5Null(SCons.Util.Null):
+    def __repr__(self):
+        return "MD5Null()"
+
+class TimeStampNull(SCons.Util.Null):
+    def __repr__(self):
+        return "TimeStampNull()"
+
+MD5 = MD5Null()
+TimeStamp = TimeStampNull()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: