Python update
gevent 1.0.1
Support Motor 0.2
meinheld==0.5.6
Refactor Python installation.
Python 3.4.1
PyPy 2.3.1 and CPython 2.7.7
Merge branch 'master' into python-r10

Conflicts:
	toolset/setup/linux/installer.py
Python3: Fix install error.
Update libraries.
Python: motor 0.3
pypy: Don't install gevent.
Merge branch 'master' into python-r10

Conflicts:
	toolset/setup/linux/installer.py
	tornado/server.py
Add momoko to requirements.
tornado: Fix import error on PyPy

tornado & PostgreSQL runs only on CPython 2 for now.
Merge branch 'master' into python-r10

Conflicts:
	toolset/setup/linux/installer.py
	tornado/server.py
861 removed open_sync

open_sync function in Motor 0.3 is deprecated,
removed.