[Debian-med-packaging] Bug#744748: setup.py: 'Pillow',

[Mathieu Malaterre]

I think I now know how to fix this bug. Upstream really wants Pillow
as hard-coded dependencies (see setup.py). However to provide a
possible wheezy backport where only python-imaging is provided, I'll
trick the debian installer using:

$ cat debian/pydist-overrides
pillow python-imaging

This will work since jessie provides a virtual `python-imaging`
package. Assuming I understand upstream correctly where python-imaging
is enough.

Thanks.