Fixed a bug that gave a traceback when doing install --help under Python 3.
Fixed a bug that gave a traceback when doing install --help under Python 3.

--HG--
branch : distribute
extra : rebase_source : 9fcc8ddc5a2f8f57660d940375e1356c9a600ac3

pypa/setuptools,pypa/setuptools,pypa/setuptools