Paraview Lion Python 2.7 nightly

Nightly build of Paraview intended for installs of OS X 10.7 or 10.8
where the system Python version is 2.7.

See http://public.kitware.com/pipermail/paraview/2013-June/028643.html
for details. This cask is a hybrid of PRs #86 and #87.
Merge pull request #88 from goxberry/paraview-lion-python27-nightly

Paraview Lion Python 2.7 nightly