When the Summer Olympics begin in Rio on Aug. 5, you will see 10,000 of the world’s best athletes compete, and a much smaller number of them being draped with medals. But who really deserves gold? The families who scrimped and saved to get them there. Raising a world-class athlete under your own roof can easily gobble up your life and your bank account. For Barbara Hopewell of Palm Desert, California, raising famed Olympic swimmer Summer Sanders meant driving to lessons at 4:25 a.m., enabling elite coaching, and getting her to swim meets around the country. At the time,