Now obsolete _even_if_dead scope usages modernized

Only affects ````mother_even_if_dead```` and ````father_even_if_dead````.  They mean the same thing as ````mother```` and ````father````, properly implemented, but the scopes weren't properly implemented previously.  Further, the ````_even_if_dead```` versions have been deemed buggy at best, and Doomdark officially obsoleted them on the forums a few months ago, pre-RoI.