See script directory for method. The script to run in the top level
MaxScale directory is called maxscale-uncrustify.sh, which uses
another script, list-src, from the same directory (so you need to set
your PATH). The uncrustify version was 0.66.
If a MaxScale-generated configuration defines an empty value, it is
ignored with the assumption that the next modification will cause the
problem to correct itself.
