A look at Irish/Celtic music events in Greater Boston over the next few weeks:•Donegal fiddler Oisín McAuley, a member of Danú who’s also performed with bands like Cran and Stockton’s Wing – and happens to be director of summer programs at the Berklee College of Music – will team up with Lúnasa uilleann piper and low whistle player Cillian Vallely for a special collaboration,