* Use a single lua state for the lua ai.
* Fixed AI_FindHerdLocation() distance check.
* Fixed AIL_positionshoot() to work as intended.
* Tweaked alien lua AI.
* Made AIL_morale return the state rather than the raw morale.

* The LUA scripts don't know the thresholds and low morale doesn't cause
  automatic panic/rage/insanity anyway.
* Make actorL_isinjured more useful.

* No one cares for a scratch but for a serious wound/injury yes.
* Introducing AI_ActorRun()

* This lets the morale code use the lua ai when enabled.
* Make the lua ai take morale into account.