[Bro-Dev] Script reorg proposal

[Matthias Vallentin]

(Thanks for the elaborate summary on filesystem paths! I am on the same
page.)

> Our current approach might be adequate since the admin has an easy way
> (change default BROPATH) to choose the best place for their local
> files.

Yup, the current approach appeals to me as well. Rethinking the
introduction of ~/.bro, I am not sure whether it adds more complexity or
helps newcomers. When in doubt, it's always good to avoid feature creep.

    Matthias