f5febc4 broke various tests which called standarddir.init() without a valid basedir.
f5febc4
This is needed for interpolation since this change in Python 3.4: https://hg.python.org/cpython/rev/267422f7c927 This broke qutebrowser in Debian experimental when updating python from 3.4.3-8 to 3.4.3-9 as they pulled from hg. Fixes #968.
Fixes #917.