Rcbot2 Ted

- hwguys rev mini gun at dangerous locations
- spies no longer trie to shoot sentries/instead focus on sapping/attacking the engi
- to do: better demoman/soldier aiming (use distance***)
- added: rcbot_rocket_pred <value> command , a multiplier for
adding prediction to soldier rockets/demoman grenades. default: 0.45
- fixed: spies try not to uncloak when enemy is facing them
- to do: spies to avoid enemies if facing them
- bots use dispensers more
- bots change classes automatically (use rcbot_change_classes 1 command)
- bots no longer cry SPY when a player is disguised as their enemy team
- new waitopen waypoint type for arena/koth maps where waypoints can only be used once the point is open
must use :arena_point_time:<seconds> in script
- + various spy tweaks