More tweaks to legacy heuristics.
More tweaks to legacy heuristics.

wlanslovenija/babeld,boutier/babeld,jech/babeld,wlanslovenija/babeld,woniullb/babeld,Gwendocg/babeldToS,tcatm/babeld,jech/babeld,Gwendocg/babeldToS,sudomesh/babeld,Drooids/babeld,dtaht/babeld-shortrtt-metrics