Bumping version of python-dateutil to 2.2
Bumping version of python-dateutil to 2.2

python-dateutil 2.2 now works on Python2 and and 3.
All tests are passing

Signed-off-by: Philippe Ombredanne <ca95c4a6a4931f366cbdaf5878c5016609417d37@nexb.com>
seomoz/reppy,seomoz/reppy,pombredanne/reppy,pombredanne/reppy