We need a LOCAL_BUS_TO_OUT_OF_SUBWAY fare type in BostonInRoutingFareCalculator

[mattwigway]

Right now a local bus -> subway -> street transfer to other subway station route can kick out one without the street transfer, because we don't have a separate type for the LOCAL_BUS_TO_SUBWAY special case after leaving the subway.

[mattwigway]

And furthermore, we need to differentiate between no transfer allowance states after a, say, express bus to subway ride, and a a no transfer allowance after a bus -> bus ride that then walks to a subway station. In the first case, you can board another train from the same location for free, whereas in the latter case you cannot.