handle ._~~__ many/~[`n/0] compilation properly
handle ._~~__ many/~[`n/0] compilation properly

Type was atom/%n, whould be cube/[0 atom/%n]
Cherry-pick of 005903

belisarius222/arvo,joemfb/arvo,urbit/urbit,jfranklin9000/urbit,cgyarvin/arvo,ohAitch/arvo,belisarius222/arvo,jfranklin9000/urbit,Fang-/arvo,joemfb/arvo,jfranklin9000/urbit,jfranklin9000/urbit,urbit/urbit,urbit/urbit,cgyarvin/arvo,ngzax/urbit,ohAitch/arvo,jfranklin9000/urbit,solri/arvo,ngzax/urbit,urbit/urbit,eglaysher/arvo,ngzax/urbit,jfranklin9000/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,urbit/urbit,jfranklin9000/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit