Python3: use range() instead of xrange()
Python3: use range() instead of xrange()

range() now behaves like xrange() used to behave, except it works with
values of arbitrary size. The latter no longer exists.

LudovicRousseau/pyscard,LudovicRousseau/pyscard,moreati/pyscard,moreati/pyscard,moreati/pyscard,LudovicRousseau/pyscard