ALIROOT-5327 Patch for compilation on Mavericks: b8bec44f83df5cbfe8cfafa529bb55930e81b4e6 update to Vc 0.7.3-dev: c017a39ffa4a72b8d5af515626efbe8045280763 merge from Vc: 5b27c5812df33f2cd8312be55278c08c805ff7f4 fix libVc compilation: 37eef76614380ec11cada18809daeaeca58b1e1d from Laurent Aphecetche, fixed compilation with clang: 4823e4d49548c1c024728301eb37552d55f9d8b6 Option to switch pi0 decay off: fcdfb7babda7e4f8fed8bea1d31a7197eaf91282