* Tiny fix in spanish translation.
* Doxygen.
* Intruduced AI_HasLineOfFire()
* Doxygen.
* Make AI_HideNeeded() shared.
* Use the ACTOR_VIS_* constants.
* Doxygen.
* Introducing AIL_HideNeeded()
* Improved the AI check for hiding places...
* Improved AI_CheckPosition()
* New danish translation for uforadiant by Joe Hansen.

* See patch #5369.
* Fixed error in alien.lua.
* Introduced CL_GetShotOrigin()