SANTA ANA, Calif. — Federal officials unsealed one indictment today alleging co-founder Henry T. Nicholas III of chip maker Broadcom Corp. spiked the drinks of technology executives and customer representatives with ecstasy and maintained a warehouse for ecstasy, cocaine and methamphetamine.A second indictment unsealed today accuses him of conspiracy, securities fraud and other violations relating to stock options backdating while he was CEO.That indictment also names Broadcom's former chief financial officer, William J. Ruehle, on conspiracy and securities fraud charges but no drug violations. Thom Mrozek, spokesman for the U.S. Attorney's office, said Nicholas was in custody after turning himself...