Change: Limit memory allocations for each Squirrel instance

This can avoid out-of-memory situations due to single scripts using up the entire address space.
Instead, scripts that go above the maximum are killed.
The maximum is default 1 GB per script, but can be configured by a setting.

(svn r25236) -Fix [FS#5547]: crash when AI is executing a command as it is bankrupted (removed from the game)
The command is placed in a queue for processing before it is bankrupted, after that the command
is executed. This command yields a failure because the company does not exist, but then it still
needs to call the callback. This callback tries to access the AI's virtual machine without any
checks, so it starts to read a just freed pointer and segfaults.

(svn r18725) -Add: [NoAI] AIWaypoint::WaypointType and AIWaypoint::HasWaypointType().
-Change: [NoAI] Constructor of AIWaypoint now takes a WaypointType to also handle buoys.
-Remove: [NoAI] AIBuoyList.

(svn r17928) -Codechange: ShowErrorMessage() now takes the summary string before the details string.
Gentlemen, swap your string parameters.

(svn r17214) -Add [NoAI]: GetAPIVersion() as optional function in info.nut. Return "0.7" to get an api compatible (as much as possible) with the 0.7 api or "0.8" to get the latest api.
-Change [NoAI]: move all deprecated functions to a separate squirrel script that is only loaded if an AI requests an old API version.

(svn r17011) -Change [NoAI]: Add AIBaseStation as a parentclass for AIStation and AIWaypoint, and move GetName, SetName and GetLocation to AIBaseStation
Remove (nearly) all references to WaypointID and replace them with StationID