add support python 2.6 on classifiers setup (pypi)
add support python 2.6 on classifiers setup (pypi)

williamroot/opps,YACOWS/opps,williamroot/opps,YACOWS/opps,opps/opps,opps/opps,YACOWS/opps,opps/opps,williamroot/opps,opps/opps,jeanmask/opps,williamroot/opps,jeanmask/opps,YACOWS/opps,jeanmask/opps,jeanmask/opps