MARTE — concept of refinement

Does the concept of refinement only apply to clock refinement. My first impression is that this concepts may apply to other NFPs. In any case, this needs to be clarified

There is agreement to extend the Refinement to any kind of NFP constraints. Issue 11864 required to use the same name in the domain model and in the UML representation so we chose NFPRefine for the name.
The resolution replaces every occurrence of ClockRefine by NFPRefine. It also replaces the association to Time::ClockConstraint by an association to NFPs::NfpConstraint. In the domain model, the metaclass Refinement is associated to NFP_Constraint instead of ClockConstraint.
The second constraint is removed since it was assuming all constraints were ClockConstraint.