README - Platform virtualenv lib modifications
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1. DJANGO-PISTON 
https://bitbucket.org/jespern/django-piston/overview
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Model name collision with python-oauth.
Described here: https://bitbucket.org/david/django-oauth/issue/3/collision-with-django-piston-on-syncdb

Piston and Django-oauth use the same model for Tokens, and same related name to their ForeignKey User.
One of the related_name has to be modified.
See platform/virtualenv/web/res/patch/piston.diff


2. PYTHON-OAUTH2
https://github.com/simplegeo/python-oauth2
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Request paramters are not handled correctly, and sometimes appear twice in the request query_string.
Described here: https://github.com/simplegeo/python-oauth2/issues#issue/21

Modification made in get_normalized_parameters in order to avoid doubling the parameters, and making the request non-valid.
See platform/virtualenv/web/res/patch/oauth2.diff