* gnu/packages/python.scm (python-unittest2): Update to 1.1.0.
[source]: Use PYPI-URI. Add two patches.
[arguments]: Add phase to run tests.
[propagated-inputs]: Add PYTHON-SIX and PYTHON-TRACEBACK2.
(python2-unittest2): Use 'package-with-python2'.
* gnu/packages/patches/python2-unittest2-remove-argparse.patch: Rename to ...
* gnu/packages/patches/python2-unittest2-remove-argparse.patch: ... this.
* gnu/packages/patches/python-unittest2-python3-compat.patch: New file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
