Scale city speeds correctly
Scale city speeds correctly

Thanks to Skin36 for figuring out the 'correct' values.

Note, the 'vanilla' apoc seems to implement the slowest speed as 1/2,
that is only updating every other frame, so all values in this checkin
are actually scaled by 2x compared to the update loop in the original.

Istrebitel/OpenApoc,ShadowDancer/OpenApoc,Istrebitel/OpenApoc,pmprog/OpenApoc,ShadowDancer/OpenApoc,pmprog/OpenApoc,steveschnepp/OpenApoc,steveschnepp/OpenApoc,FranciscoDA/OpenApoc,FranciscoDA/OpenApoc,FranciscoDA/OpenApoc