modified score_fission_delayed_eout to provide more clarity
modified score_fission_delayed_eout to provide more clarity

johnnyliu27/openmc,paulromano/openmc,kellyrowland/openmc,kellyrowland/openmc,samuelshaner/openmc,shikhar413/openmc,liangjg/openmc,shikhar413/openmc,samuelshaner/openmc,smharper/openmc,smharper/openmc,shikhar413/openmc,mit-crpg/openmc,amandalund/openmc,walshjon/openmc,smharper/openmc,paulromano/openmc,amandalund/openmc,johnnyliu27/openmc,wbinventor/openmc,liangjg/openmc,johnnyliu27/openmc,walshjon/openmc,wbinventor/openmc,amandalund/openmc,samuelshaner/openmc,paulromano/openmc,mjlong/openmc,samuelshaner/openmc,paulromano/openmc,johnnyliu27/openmc,wbinventor/openmc,walshjon/openmc,mit-crpg/openmc,shikhar413/openmc,mit-crpg/openmc,mit-crpg/openmc,wbinventor/openmc,liangjg/openmc,bhermanmit/openmc,amandalund/openmc,smharper/openmc,liangjg/openmc,walshjon/openmc,bhermanmit/openmc,mjlong/openmc