[appveyor] switch to msys1 and mingw64 + few updates
[appveyor] switch to msys1 and mingw64 + few updates

radarsat1/siconos,radarsat1/siconos,bremond/siconos,siconos/siconos-deb,siconos/siconos,bremond/siconos,bremond/siconos,siconos/siconos-deb,siconos/siconos-deb,siconos/siconos,bremond/siconos,fperignon/siconos,siconos/siconos,radarsat1/siconos,fperignon/siconos,siconos/siconos-deb,fperignon/siconos,fperignon/siconos,bremond/siconos,siconos/siconos-deb,radarsat1/siconos,fperignon/siconos,siconos/siconos,radarsat1/siconos,siconos/siconos-deb