vere: replace dprintf (missing on MingW) with snprintf+write
vere: replace dprintf (missing on MingW) with snprintf+write

ngzax/urbit,ngzax/urbit,urbit/urbit,urbit/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,urbit/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,ngzax/urbit