Base, Ir_model_data , _update

AIM : To Use the context of screen/action to the record which is getting imported (the context passed by client).

Change:

1. _update() of ir_model_data class has a new arguement context in its signature.

def _update(self,cr, uid, model, module, values, xml_id=False, store=True, noupdate=False, mode='init', res_id=False):

Will appear as

def _update(self,cr, uid, model, module, values, xml_id=False, store=True, noupdate=False, mode='init', res_id=False, context=None):

This context will be passed to OpenERP methods create(),browse(),read(),write() used withing _update().
Context is very important factor that comes into picture specially during translation.