Without this, python is unable to find the module:
$ python -c 'import libmount'
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python3.3/site-packages/libmount/__init__.py", line 1, in <module>
from pylibmount import *
ImportError: No module named 'pylibmount'
Signed-off-by: Dave Reisner <dreisner@archlinux.org>