Support Python 2.5, which now includes its own install_egg_info command.
Support Python 2.5, which now includes its own install_egg_info command.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4043406

pypa/setuptools,pypa/setuptools,pypa/setuptools