* Also initialize the LUA AI for payer soldiers.
* Quickly fixed the soldier lua ai to allow it to actually run if called.

* Not yet actually working.
* Tweaked alien ai lua script.

* Renamed things, set correct defaults for unknown aliens, more death checks...
* Tweaked civilian ai lua script.

* Renamed things, fixed errors...
* Revamped the soldier lua ai -- copied from the alien one for now.
* Introduced actorL_isvalidtarget()