update bundled ez_setup.py for setuptools-7.0 that requires Python 2.6 or later.

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extra : histedit_source : 9e60c98ff56e86ce55ae3ccece23ce9b35036ee7%2Ce8a4b7cae98497815a6518190898b165250b079d
replace PIL with Pillow.

--HG--
extra : histedit_source : 33c8875fe3fece4b9585c42117673dfeade98fce