[FIX] force to clear Registry cache in case xml_import() rollback
[FIX] force to clear Registry cache in case xml_import() rollback

  forward-port of v6.0 server revid: xal@openerp.com-20121213123054-0bbv1h5vjdngvkcd

bzr revid: xal@openerp.com-20121213143811-8gn64sx8pr31190c
podemos-info/odoo,podemos-info/odoo,podemos-info/odoo,podemos-info/odoo,podemos-info/odoo,podemos-info/odoo,podemos-info/odoo