Provide modern unittest methods for backend tests too
Provide modern unittest methods for backend tests too

We provide more modern (Python 2.7-style) unittest methods
when testing Python frontends with Python 2.6. Provide the
same methods when testing backends too.

salilab/saliweb,salilab/saliweb,salilab/saliweb,salilab/saliweb,salilab/saliweb