Add new decfiles - B->pimunu + X for Bs2mumugamma analysis
Backgrounds for the high-q2 Bs->mumugamma analysis.
Bd -> pimunu, Bd -> rhomunu, Bu -> etamunu, Bu -> omegamunu, Bu -> rhomunu, with inrtermediate states going to at least on charged pion. The pion and muon combination is requested to have mass above 4.0GeV, and be in LHCb acceptance.