[FIX] procurement: procurement orders does not have a `warehouse_id` field
[FIX] purchase: choose the right warehouse when creating purchase orders from procurement orders
[FIX] purchase_requisition: choose the right warehouse when creating purchase requisitions from procurement orders + allow to work in batch.
[FIX] purchase_requisition: copy method _get_warehouse from purchase module to avoid crash if purchase_requisition is updated but not purchase
[MERGE] {purchase,purchase_requisition}: choose the right warehouse when creating purchase orders from purchase order/requisition
[MRG] merge conflicting code from
http://bazaar.launchpad.net/~ocb/ocb-addons/7.0/revision/9628
and
http://bazaar.launchpad.net/~openerp/openobject-addons/7.0/revision/9651
[FIX] cope with non-standard parameters of _get_warehouse
[FIX] cope with non-standard parameters of _get_warehouse continued
[MERGE] Resolve conflict in purchase and purchase_requirement between
    ocb-addons and openobject-addons.