LocatorUnum

See.

The LocatorUnum provides the authority to convert bits (a VatID and SwissNumber) into a capability (a CapTP live ref). Each Introducer has one presence of the LocatorUnum.

Protocol
The basic operation underlying 'SturdyRef.getRcvr'.

This is where a reference to a remote object actually gets the various underlying comm systems connected so that we can send messages.

getRcvr only works when we're onTheAir.

Parameters:
 * searchPath : A list of places to try to find the vat
 * vatID : The vat from which the object reference should be obtained
 * swissNum : The SwissNumber of the desired object
 * optFarVine : Optional object for holding onto a Remote reference via whoever we got it from long enough to fetch our own Remote reference via this lookup.