Quiet option is useful to disable printing overhead
when measuring library performance.

Example run:
gupnp/examples$ ./light-server -q
^C
gupnp/examples$ ./light-server --help
Usage:
  lt-light-server [OPTION...]

Help Options:
  -h, --help       Show help options

Application Options:
  -q, --quiet      Turn off output

https://bugzilla.gnome.org/show_bug.cgi?id=708575