Clarification about compilation model and the mapping of package names to directory.

[Marco Leise via Digitalmars-d]

It is de facto allowed, yes. But if it only works in
compile-at-once, and isn't essential for some use case, it is
just friction and I agree to forcing package names to match
their paths. But I suspect there is _are_ use cases. It's not
the first time we talk about this, IIRC.

-- 
Marco