Partial port of mrp_average_cost (I just maked it installable)

mrp_average_cost/security/labour_cost_profile_security.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<openerp>
-<data noupdate="1">
+<odoo noupdate="1">
 
 <record id="labour_cost_profile_rule" model="ir.rule">
     <field name="name">Labour Cost Profile multi-company</field>
@@ -8,5 +7,4 @@
     <field name="domain_force">['|', ('company_id', '=', False), ('company_id', 'child_of', [user.company_id.id])]</field>
 </record>
 
-</data>
-</openerp>
+</odoo>