Make ++ecdsa-raw-recover accept unmodified signature
Make ++ecdsa-raw-recover accept unmodified signature

Continuation of b2365dbd4

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