Set gears that go off map to gmDestroy instead of collision, disable morewind for no-gravity gears, restrict application of wind to gears that are already moving and not colliding.
Added tag Hedgewars-iOS-2.0 for
changeset a0163b8302c5
Drop all GLUT references
It was needed to create the hidden videorec window, now SDL2 offers
this feature natively.