The source project of this merge request has been removed.
Changing the parent class of LheConverterUpc from EvgenAlg to EvgenAnalysisAlg.
This fixes a bug where the first event in the EVNT file is empty (0 particles and 0 vertices) which causes truth derivation production to crash (possible source of the bug: EvGenAlg injects HEPMC events).
Additionally, Generators/Superchic_i/python/LheConverterTauolaPhotonHack.py is removed since it's superseded by Generators/MCJobOptionUtils/python/LheConverterUpc.py which does the same job.