[toward-py3k] rewrite __cmp__ (closes #2715115) In Python 3k `__cmp__` special method is no longer supported. So we split it in `__lt__` and `__eq__`. details on Python3k behavior here: http://docs.python.org/3.0/whatsnew/3.0.html#ordering-comparisons

debian/tmp/usr/bin/cubicweb-ctl usr/bin/
debian/tmp/usr/lib/PY_VERSION/site-packages/cubicweb/cwctl.py usr/lib/PY_VERSION/site-packages/cubicweb
debian/cubicweb-ctl.bash_completion etc/bash_completion.d/cubicweb-ctl