python - ip: Add some support for setuptools.

Log Message:
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Add some support for setuptools.

distutils are used by default as there are still some kinks to work out with
setuptools. (export USE_SETUPTOOLS=yes to test)

Modified Files:
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ip:
setup.py (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/ip/setup.py.diff?r1=1.1.1.1&r2=1.2)