* Removed actorL_face()

+ Use pos3L_face() instead.
* Removed G_ActorVis' 'from' parameter.

* It was never really used and was inconsistent with the usage of
  G_ActorGetEyeVector inside the function.
* Reduced scope.
* Introduced AIL_tusforshooting()
* Minor Spanish translation update.
* Added AIL_class()
* Doxygen.
* Set Edict::AI::subtype to something useful (Alien team only)