[IMP] _defaults: allow to pass directly the value instead of a lambda
[IMP] _defaults: allow to pass directly the value instead of a lambda

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