[FIX] setup.py: added missing pytz requirement
[FIX] setup.py: added missing pytz requirement

--HG--
extra : convert_revision : odo%40openerp.com-20110524214535-6o8lmt8la2zpazix

vnc-biz/openerp-web,gisce/openerp-web,gisce/openerp-web,splbio/openerp-web,vnc-biz/openerp-web,splbio/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web,gisce/openerp-web,MarkusTeufelberger/openerp-web,MarkusTeufelberger/openerp-web,vnc-biz/openerp-web,vnc-biz/openerp-web