(Corrects last name of mother of two Honduran migrants to Caballero from Castillo) By Jackie Botts OAXACA CITY, Mexico (Reuters) -Before he began the journey that ended in disaster, Jose Luis Vasquez lived in a remote mountainous community in southern Mexico, where a single telephone connects a few indigenous families to the outside world, local residents said. Now the 31-year-old is in a hospital in San Antonio, Texas, after becoming severely dehydrated in a sweltering tractor-trailer truck in which at least 53 migrants died in the worst human smuggling tragedy in recent U.S. history. One of …