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.
The tests failed to compile due to invalid use of try_query. For some
reason this wasn't detected by newer compilers.
Also fixed the compilation failure of mxs1713_lots_of_database on CentOS
7.