Added an unmodified copy of SCons to third_party.

scons-2.0.1/script/scons.bat

+@REM Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
+@REM src/script/scons.bat 5134 2010/08/16 23:02:40 bdeegan
+@echo off
+set SCONS_ERRORLEVEL=
+if "%OS%" == "Windows_NT" goto WinNT
+
+@REM for 9x/Me you better not have more than 9 args
+python -c "from os.path import join; import sys; sys.path = [ join(sys.prefix, 'Lib', 'site-packages', 'scons-2.0.1'), join(sys.prefix, 'Lib', 'site-packages', 'scons'), join(sys.prefix, 'scons-2.0.1'), join(sys.prefix, 'scons')] + sys.path; import SCons.Script; SCons.Script.main()" %1 %2 %3 %4 %5 %6 %7 %8 %9
+@REM no way to set exit status of this script for 9x/Me
+goto endscons
+
+@REM Credit where credit is due:  we return the exit code despite our
+@REM use of setlocal+endlocal using a technique from Bear's Journal:
+@REM http://code-bear.com/bearlog/2007/06/01/getting-the-exit-code-from-a-batch-file-that-is-run-from-a-python-program/
+
+:WinNT
+setlocal
+@REM ensure the script will be executed with the Python it was installed for
+set path=%~dp0;%~dp0..;%path%
+python -c "from os.path import join; import sys; sys.path = [ join(sys.prefix, 'Lib', 'site-packages', 'scons-2.0.1'), join(sys.prefix, 'Lib', 'site-packages', 'scons'), join(sys.prefix, 'scons-2.0.1'), join(sys.prefix, 'scons')] + sys.path; import SCons.Script; SCons.Script.main()" %*
+endlocal & set SCONS_ERRORLEVEL=%ERRORLEVEL%
+
+if NOT "%COMSPEC%" == "%SystemRoot%\system32\cmd.exe" goto returncode
+if errorlevel 9009 echo you do not have python in your PATH
+goto endscons
+
+:returncode
+exit /B %SCONS_ERRORLEVEL%
+
+:endscons
+call :returncode %SCONS_ERRORLEVEL%