rygel: Disable plugin timeout completely
rygel: Disable plugin timeout completely

Make it possible to disable the timeout, mainly to serve debugging setup
that needs to be done during startup.

Signed-off-by: Jens Georg <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@jensge.org>

GNOME/rygel,Tarnyko/rygel,GNOME/rygel,Tarnyko/rygel,GNOME/rygel