[Bro-Dev] enable-debug doesn't work on FreeBSD

[Jonathan Siwek]

> Can we just generally add a "-g" to debug builds if it's not there yet
> (or even if it may be, if we can't check easily?). Seem there's not
> much harm to that?

Ok.  I'm imagining that a Bro port might have to workaround my workaround.  But I guess that would be fine since we'd be back where we started before the CMake port did their workaround.

- Jon