- This makes linking easier,
- Adds the right includes (needed on FreeBSD),
- Lets us drop silly GUI setting for non-GUI tests (I think this was
a side-effect of compiling on FreeBSD, where UI would pull in
/usr/local/include).
This is meant to run one or more jobs based on specific global
configuration values; if could also be done by a Python
module with just some if's, but this one can be used with
just the config file and covers a bunch of use-cases.