Fix minigun bullet impact image being drawn over hog sometimes

Fix direction of dispensed bullet shells from shotgun/sniper/minigun

ACF8: Fix invisible cyborg sometimes blocking the way

A Classic Fairytale: Harden all missions against missing campaign variables in team file and assume default values This assumes the worst case in which the team file is missing all campaign variables except Progress. This has been successfully tested with all 10 missions and still generates a logical storyline. By default, the game assumes: - The cyborg's offer in mission 2 was refused - The traitor in mission 5 was killed As a consequence, missions 8 and 10 use the princessScene cut scene.

ACF9: Fix cannibal talking to himself in cut scene if playing with 3 natives instead of 4

ACF6: Change mines, remove mines placed at unfair positions MinesNum was set to a non-zero value. Some mines ended up in weird positions like directly under a crate. Now all mines and barrels are placed manually.

ACF3: Fix cannibals sometimes doing nothing for a full turn This was because hogs got confused because walking was forbidden by SetInputMask. Now we use a proper hedgehog effect heArtillery.