Keeping the parser state internal to a subclass makes the code more
readable and allows the removal of most parameters. It also removes the
need to return iterator ranges from the tokenization function thus making
the Token class obsolete.
Unit testing benefits from this as well as it more closely resembles usage
in the wild as more of the code can be run without a live system.
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.
Single spot where an existing hint ptr was overwritten. Removed gwbuf_add_hint()
because it was adding hints at the opposite end compared to functions in hint.h.
Added hint_splice() to replace.
