TODO - Update man page for Gambas2
TODO - Add error checking after setting scaling_setspeed in Utils.SetConfig
TODO - Add error checking after setting scaling_max_freq in Utils.SetConfig
TODO - Add error checking after setting scaling_min_freq in Utils.SetConfig

DONE - If no available_freqs, use maxfreq and minfreq for freqs dropdown
DONE - Prioritize gksu over kdesu
