By THE PULSE NEWS MEXICO STAFF     Mexico City’s Centro Cultural José Martí marked the 42nd birthday of Mexican-American musician Carlos Santana on Friday, May 25, with a three-hour rock and Latino concert that was open to the general public. Headlining the concert was Mexico City group Excálibur, which performed a series of Santana’s most famous works, including “Ain´t Got Nobody,” “Black Magic Woman,”