By Piya Sinha-Roy LOS ANGELES (Reuters) - French electro-dance music duo Daft Punk held onto the top spot for a second week on the Billboard 200 album chart on Wednesday, staving off new entries from veteran rockers Alice in Chains and John Fogerty. "Random Access Memories," the highly anticipated fourth studio album from Daft Punk, sold 92,000 copies in its second week of release, according to figures from Nielsen SoundScan. But sales of the album dropped 73 percent from last week, when it debuted at the top of the weekly Billboard 200 chart with 339,000 copies. ...