Point to permalink for ez_setup.py in README. Fixes #25.
Added stubbed upload_ez_setup function
Spaces for indent
Add the pure python sha implementations from PyPy to handle Python 2.4

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extra : rebase_source : ffdfb8a18db6ad43a669231a47e2674964776b48
Add a shim for python 2.4 compatability with hashlib

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extra : rebase_source : 5f573e600aadbe9c95561ee28c05cee02c7db559
Enable using any guarenteed hash as a hash function

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extra : rebase_source : 1c5040c4a89dfcd4ec8cf2ad64825d5bc73ebe30