Teach AI to set minimum mine bounce for improved aiming

Teach AI to drop mines from safe height Placing mine on ground and then escaping is not possible yet

Teach AI to spam extra time if infinite

Merge b988d3be7100

Disable gfMoreWind for land objects on turn end only after a fixed-time delay 15s sounds much, but it's the average amount for gfMineStrike mines to settle naturally. And it would be very confusing to see falling mines suddenly not caring about gfMoreWind for no apparent reason. Note this whole thing is a giant hack anyway, to prevent a turn being blocked by infinitely bouncing mines. The better solution would be to help gfMoreWind-affected land objects settle naturally more reliably even under extreme wind. But this commit is "good enough" for now. If you don't like the delay, you can always tweak the constant.

Fix many gears not being affected by gfMoreWind on turn end

experimental blowtorching

remove blowtorching tautology

Cleaner digit parsing of ammo schemes Because invalid ammo scheme files could break the game somewhat

Fix camera zooming out too far in pause mode (bug #773)