Add setuptools egg to third_party.

This CL adds the egg distribution of setuptools to third_party. A follow-up CL will use this to install various required third-party eggs in a depot_tools/site-packages directory.

TBR=maruel@chromium.org
BUG=
TEST=


Review URL: http://codereview.chromium.org/8953018

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@114635 0039d316-1c4b-4281-b951-d872f2087c98

third_party/setuptools/README.chromium

+URL: http://pypi.python.org/pypi/setuptools
+Version: 0.6c11
+License: Dual Licensed PSF/ZPL
+License File: LICENSE.txt
+
+Description:
+This directory contains the egg distribution for setuptools.
+
+Local Modifications:
+None