Update CPython 2.7.5 and PyPy 2.0.2.

* Install CPython to ~/FrameworkBenchmarks/installs
* Remove eventlet and gevent
* Update Django to 1.5.1
* Update some libraries.
Fix python installation.
fix flask-pypy
django: support 1.5
django-stripped: Support Django 1.5
Install gevent for django-psycopg2-pool.
Use persistent connection.
django: Remove django-psycopg2-pool.

It is for gevent.
Use Django 1.6's persistent connection now.
Django: Use 1.6a1 to use persistent connection.
Add tornado-pypy-raw.
tornado: Disable computing etag.
django: Fix Django 1.6a1 installation.

pip install Django==1.6a1 installs 1.5.1
django, django-stripped: Tuning worker processes.
Fix gunicorn with meinheld doesn't work.

`pip install meinheld` installs greenlet 0.4.1. But latest meinheld
specifies "greenlet==0.4.0" as spec.

This cause error on starting gunicorn.
distribute-0.6.45 => setuptools 0.7.1
jinja2 2.6 => 2.7
Merge branch 'python-update' of https://github.com/methane/FrameworkBenchmarks into methane-python-update