Changed root_produce_tth so that only one branch set of 4-vectors is produced, containing higgs/top as well as final state interacting gen-particles. Modified DrawSpectr.py so it can live with the changes
Modified RunHTT.py to work with the new input (filter out tops and higgs before running CA clustering. This will still save them in the collection of input objects so we can do the matching in a subsequent event-loop step
Small fix: switched status code and PdgId branches from float to int