New tag for Run2 processing. Contains fixes for ALIROOT-5988 TPC QA crases in Stage 5 merging ALIROOT-6001 AliSimulation fails to recognize libHLTsim.so ALIROOT-6003 tag ALIROOT for commit 8ebce... ALIROOT-6009 port to Release T0 channel offset calibration for RUN2 based on quite beams results