Useful before committing something.
* `listfull.sh` lists tests that are run by `testfull.sh`.
It is used by other scripts but can be used by human to see what is tested.
+ Each path is quoted using apostrophes, with `'\''` escaping an apostrophe.
+ This syntax is compatible with `xargs` and the POSIX shell.
Currently, all files in `tests/`, `lib/` and `examples/` are executed, some of `contrib/` and the main programs of `src/`.
To update the list of tested files, just edit this script.