[Bro-Dev] script loading changes

[Jonathan Siwek]

> What if we always try the literal version first, before trying the
> alternatives with dots replaced, .bro added, etc?

Ok, let me try again.  So there's a file in BROPATH with the name

    foo.bar/foo/bar.blub.something.bro

To load that in a script you do

    @load foo.bar/foo/bar.blub.something

And then starting with the literal version it searches BROPATH for

1) foo.bar/foo/bar.blub.something
2) foo.bar/foo/bar.blub.something.bro
3) foo/bar/foo/bar/blub/something
4) foo/bar/foo/bar/blub/something.bro

We never make it past #2 because that's the right name.

But from a new user's perspective, it's not intuitive to try the
literal version because everywhere else, the convention is to reference
scripts in packages in the dotted format, which would be:

   @load foo.bar.foo.bar.blub.something

and that would search BROPATH for

1) foo.bar.foo.bar.blub.something
2) foo.bar.foo.bar.blub.something.bro
3) foo/bar/foo/bar/blub/something
4) foo/bar/foo/bar/blub/something.bro

And none of those are right.

- Jon