(svn r1951) Introduced SeedModChance() (which is like SeedChance() but uses simple modulo instead of bitshifting and multiplication), explained why does it work better, used it in MakeCzechTownName() and added a TODO note about possibly using it in the other town name generators too.

echo "Setting default network server settings..."
net_sync_freq = 100
net_frame_freq = 0