Not surprisingly, Yahoo was near the top of Battelle’s list of questions. The software giant tried to purchase the company a few years ago, but was rebuffed. That rejection looks foolish now, in the wake of the beleaguered search engine’s woes. So how does Ballmer feel about it now? In a word, relieved. When Battelle asked Ballmer if he was glad that Yahoo didn’t take his company up on its unsolicited $47.5 billion bid back in 2008, Ballmer laughed and said You know, times change. When you ask any CEO [that type of question] after the market has fallen apart, it’s ‘hallelujah.’ He added, So…