setup/support: update to latest versions of everything

setup.py safe_develop stuff:
 peep-1.2
 virtualenv-1.11.6
  includes pip-1.5.6 and setuptools-3.6

actual dependencies:
 zope.interface-4.1.0
 twisted-14.0
 six-1.7.2
 pycparser-2.10
 cffi-0.8.2
 PyNaCl-0.2.3