Fixed `xpath` problem on ubuntu 8.04 (caused by deprecated pyxml package)
Fixed `xpath` problem on ubuntu 8.04 (caused by deprecated pyxml package)

vnc-biz/openerp-server,gisce/openobject-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,gisce/openobject-server,ovnicraft/openerp-server,gisce/openobject-server,splbio/openobject-server,xrg/openerp-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,ovnicraft/openerp-server,xrg/openerp-server,vnc-biz/openerp-server