* Separate ConstInts.

* One set for functions that sot by distance (path and absolute distances) and
 those that use other sort criteria.
* Refactored AIL_toVisInt()

* To make it work like the lua_to* functions.
* Refactored AIL_toSortInt()
* Refactored AIL_toDistInt()
* Now with AIL_toShotPInt()
* Finally AIL_toWanderPInt() (plus fixed the namespace)