dh_python2 replaced by dh_python-support, installs on squeeze ok
prerm removes /var/cache/iptables-optimizer on purge
cosmetics in Makefile and iptables_optimizer.py
py.test introduced, nosetests are replaced
clean removes pycache and egg.info
version 0.9.7 released

README.txt adapted to new verson, pylint mentioned

improving iptables_optimizer.py by using pylint's useful hints
 unnecessary import string removed,
 bytes variable renamed to byts due to reserved word
 part_no variable removed as it was not useful
 unnecessary unbufd behavior removed as a relict from subproces
 final output is done via a variable outmsg now

setup.py distutils was replaced by setuptools
 version set to 0.9.7
debian changelog extended by gbp dch --release --auto
clean now removes directory dist, created by building rpm