Reduced CPU usage up to ~50%, can be noticed on algos with small scratchpad
User is now informed about tweaking status on the screen too, not just in log
No more --gpureorder, device ordering by bus id is now the default/only display mode
Added parameter --watchdogrounds , which controls after how many rounds will watchdog trigger
min_rig_speed_duration default is 1 minute now, because of the new --watchdogrounds parameter
Fixed a few cosmetical things on web stats
