[kernel] return the correct type for newtonMaxIteration()
[kernel] return the correct type for newtonMaxIteration()

radarsat1/siconos,radarsat1/siconos,radarsat1/siconos,siconos/siconos,siconos/siconos,siconos/siconos,siconos/siconos,radarsat1/siconos,radarsat1/siconos