fix build_im_addr() for the case when both company + person name are given

When a company name and person name are given, we need to first generate
a PersonName object using inema build_pers_name() method, and then pass
that as 'person' kwarg into the build_comp_addr() method.  We cannot
simply pass alon the string name as the code did so far.

This requires python-inema 0.2 or later, but it seems like a version
dependency on an external python module cannot be expressed in
__openerp__.py

models/dp_delivery_carrier.py

@@ -67,7 +67,8 @@ class DPDeliveryCarrier(models.Model):
             if partner.parent_id.name:
                 person = None
                 if partner.name:
-                    person = partner.name
+                    (first, last) = split_first_lastname(partner.name)
+                    person = im.build_pers_name(first=first, last=last, title=partner.title)
                 return im.build_comp_addr(company = partner.parent_id.name,
                                           address = addr,
                                           person = person)