Gpu min max, more pattern implemented

NEWS.txt:

 * on GPU for reduction min, max, add the pattern for 1*, 010, 1000, 0100, 0010, 0001, 0011 0111 (Frederic B.)
   * So now, min/max support all the pattern that sum on the gpu support
* Support prod on the GPU for all reduction pattern supported. (Frederic. B.)