sean@bz:~/brlcad$ grep -r -i superell *|grep -v "Binary file" | cut -d: -f1 | uniq

include/db.h		<-- function table index (table.c)
include/db5.h		<-- v5 major type codes
include/raytrace.h	<-- v4 compatibility major type code
include/rtgeom.h	<-- define internal structure

src/librt/Makefile.am	<-- line to compile new g_*.c file
src/librt/g_superell.c	<-- new raytrace interface
src/librt/table.c	<-- function table entry

src/mged/anal.c		<-- support for 'analyze' mged command
src/mged/chgmodel.c	<-- 'make' and 'mirror' mged commands
src/mged/edsol.c	<-- edit mode support
src/mged/tedit.c	<-- 'ted' mged command support
src/mged/typein.c	<-- 'in' mged command support