Set up H7.2 with ThePEG2.2
Setting H7.2 and ThePEG2.2, making changes in Herwig7.cxx to match HepMCTraits definition in ThePEG2.2
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Setting H7.2 and ThePEG2.2, making changes in Herwig7.cxx to match HepMCTraits definition in ThePEG2.2