[Bro-Dev] script loading changes

[Jonathan Siwek]

> > And actually I think the search orders listed above should be
> > reversed to make the common case faster.
> 
> Isn't the dotted-case the common one if that's what the default
> scripts will be using?

The dotted format is what's used most often in the @load, but
usually not what the literal filename/path is going to be.

@load frameworks.software.base

would do best to look in BROPATH for "frameworks/software/base.bro"
first instead of the literal "frameworks.software.base" filename.

- Jon