Minor changes, additional files.

experimental/hex/scons.bat

+@echo off
+
+:: Copyright (c) 2011 The Native Client Authors. All rights reserved.
+:: Use of this source code is governed by a BSD-style license that can be
+:: found in the LICENSE file.
+
+setlocal
+
+:: NACL_SDK_ROOT must be set.
+if not defined NACL_SDK_ROOT (
+  echo Error: NACL_SDK_ROOT is not set.
+  echo Please set NACL_SDK_ROOT to the full path of the Native Client SDK.
+  echo For example:
+  echo set NACL_SDK_ROOT=D:\nacl_sdk
+  goto end
+)
+
+# NACL_TARGET_PLATFORM is really the name of a folder with the base dir -
+# usually nacl-sdk-root - within which the toolchain for the target platform
+# are found.
+set NACL_TARGET_PLATFORM=pepper_16
+
+set NACL_PLATFORM_DIR=%NACL_SDK_ROOT%\%NACL_TARGET_PLATFORM%
+
+:: Set the PYTHONPATH and SCONS_LIB_DIR so we can import SCons modules
+set SCONS_LIB_DIR=%NACL_PLATFORM_DIR%\third_party\scons-2.0.1\engine
+set PYTHONPATH=%NACL_PLATFORM_DIR%\third_party\scons-2.0.1\engine
+
+:: We have to do this because scons overrides PYTHONPATH and does not preserve
+:: what is provided by the OS.  The custom variable name won't be overwritten.
+set PYMOX=%NACL_PLATFORM_DIR%\third_party\pymox
+
+:: Run the included copy of scons.
+python -O -OO "%NACL_PLATFORM_DIR%\third_party\scons-2.0.1\script\scons" ^
+--warn no-visual-c-missing ^
+--file=build.scons ^
+--site-dir="%NACL_PLATFORM_DIR%\build_tools\nacl_sdk_scons" %*
+
+:end