LA COUR DE CASSATION, CHAMBRE SOCIALE, a rendu l'arrêt suivant : Vu leur connexité, joint les pourvois n° Y 11-19.224, Z 11-19.225, A 11-19.226, B 11-19.227, X 11-30.401, Y 11-30.402, Z 11-30.403, A 11-30.404, B 11-30.405, C 11-30.406, D 11-30.407, E 11-30.408, F 11-30.409, H 11-30.410, G 11-30.411, J 11-30.412, K 11-30.413, M 11-30.414, N 11-30.415, P 11-30.416, Q 11-30.417, R 11-30.418, S 11-30.419, T 11-30.420, U 11-30.421, V 11-30.422, W 11-30.423, X 11-30.424, Y 11-30.425, Z 11-30.426, A 11-30.427, B 11-30.428, C 11-30.429, D 11-30.430, E 11-30.431, F 11-30.432, H 11-30.433, G 11-30.434, J 11-30.435, K 11-30.436, M 11-30.437, N 11-30.438, P 11-30.439, Q 11-30.440, R 11-30.441, S 11-30.442, T 11-30.443, U 11-30.444, V 11-30.445, W 11-30.446, X 11-30.447 ; Sur l'irrecevabilité des pourvois soulevée par le mémoire en défense : Vu l'article 605 du code de procédure civile, les articles…