* no need to propagate temp_object argument to creating Solver Decision, because if parent object is temp object, its childrean are also temp object.
* fix a bug that newSolverProcess() returns None for non-temp case.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@36746 20353a03-c40f-0410-a6d1-a30d3c3de9de