natpmp: Separate out the PortThreadMsgs from the heap actions.
natpmp: Separate out the PortThreadMsgs from the heap actions.

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