[cmake] FindMUMPS: add missing steps for scotch and ptscotch linking
[cmake] FindMUMPS: add missing steps for scotch and ptscotch linking

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