By Piya Sinha-Roy LOS ANGELES (Reuters) - U.S. rock band Bon Jovi beat British singer David Bowie to the top of the Billboard 200 album chart on Wednesday. Bon Jovi, fronted by Jon Bon Jovi, notched their fifth No. 1 album with "What About Now," which sold 101,000 copies in its debut week, according to figures from Nielsen SoundScan. Bowie, 66, a pioneer of Britain's glam rock movement in the 1970s and 1980s, came in at No. 2 with his latest album "The Next Day," selling 85,000 copies. ...