PR140939 --track-fds reports leakage of stdout/in/err and doesn't respect -q

PR140939 --track-fds reports leakage of stdout/in/err and doesn't respect -q

Make --track-fds=yes not report on file descriptors 0, 1, and 2 (stdin,
stdout, and stderr) by default. Add a new option --track-fds=all that does
report on the std file descriptors still being open. Update testsuite and
documentation.

Original patch by Peter Kelly <pmk@cs.adelaide.edu.au>
Updated by Daniel Fahlgren <daniel@fahlgren.se>

https://bugs.kde.org/show_bug.cgi?id=140939