Finish renaming a variable
Pull more ?/ stuff into data

in a sense...
Add LTYPF_SUPPORT_TILES

And prune a variable.
Finish gutting ?/ _find_description()
Move lookup_type into _do_description()

And separate out LookupType's declaration from its definition, &c
Partially deughify some ?/ code

Still would need more work to support sorting things other than
monsters, but one step at a time.