- make findEffectiveSpecialiseValueList recursive and change the behaviour :
     now, we check the first model from the inheritance tree, if this model is effective, use it, else take the effective one.
     On this effective model, get all specialise_value and take their effective value.
     Return the list of all this new effective inheritance tree


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27653 20353a03-c40f-0410-a6d1-a30d3c3de9de