Fixes the AI using the 'Get Down' animation when they mark a special unit.

This won't break anything as the 'Get Down' animation used by Team AI actually belongs to the Bulldozer, who never uses it. Replaced the animation with the 'Point' animation that players use for marking special units. Player animations are unaffected.

Extract to mod_overrides.

Instead of Bots doing this when marking a special unit:

They will do this instead, like they should:

Known issue:

• Bots will point at civilians when vocalizing 'Get down' (not 'Stop right there' however) at them.
  
• Guards will point at you if they attempt the 'Don't move / Stop' vocalization.
  

I feel neither of these are a real problem. They are both minor and do not seem out of place. I think it looks better actually. Very minor trade off for having the AI use proper marking.