Applying this fix:

http://scons.tigris.org/issues/show_bug.cgi?id=2449

Which we had done in the previous scons version.

BUG=None
TEST=None
R=noelallen@google.com
Review URL: http://codereview.chromium.org/6880195

git-svn-id: svn://svn.chromium.org/native_client/trunk/src/third_party/scons-2.0.1@5025 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

Patched the new version of SCons to work around a Mac+Python+Toolchain bug.

BUG= http://code.google.com/p/nativeclient/issues/detail?id=1250
TEST= none (bugfix for a to-be-commited CL)
Review URL: http://codereview.chromium.org/6731096

git-svn-id: svn://svn.chromium.org/native_client/trunk/src/third_party/scons-2.0.1@4664 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

Added an unmodified copy of SCons to third_party.

This change does not affect NaCl, yet.

BUG= http://code.google.com/p/nativeclient/issues/detail?id=1250
TEST= none
Review URL: http://codereview.chromium.org/6711079

git-svn-id: svn://svn.chromium.org/native_client/trunk/src/third_party/scons-2.0.1@4632 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2