fix clay cache for non-%mime entries; also add equality check as optimization
fix clay cache for non-%mime entries; also add equality check as optimization

ngzax/urbit,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,joemfb/arvo,ngzax/urbit,jfranklin9000/urbit,joemfb/arvo,urbit/urbit,belisarius222/arvo,urbit/urbit,jfranklin9000/urbit,jfranklin9000/urbit,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,urbit/urbit,ngzax/urbit,belisarius222/arvo,ngzax/urbit,urbit/urbit,jfranklin9000/urbit,jfranklin9000/urbit