This adds the ECFG_3_3_2 moment back into EnergyCorrelatorGeneralizedTool. This is necessary for the current MDT studies. If it is found to be unnecessary it will be removed.
ECFG_3_3_2
EnergyCorrelatorGeneralizedTool
Tagging @cdelitzs, @mswiatlo, @farooque, and @tnobe