(svn r16121) [0.7] -Backport from trunk:

- Add: [NoAI] UseAsRandomAI as function in info.nut. When an AI returns false, it will never be chosen as random AI (r16113)
- Fix: [NoAI] Make sure AIOrder::GetDestination always returns a tile belonging to the station (16109)
- Fix: [NoAI] When giving an aircraft a goto-hangar order do not let it be a normal goto-station order (r16108)
- Add: [NoAI] AIOF_STOP_IN_DEPOT to the orderflags in AIOrder to allow stop-in-depot orders (r16107)
- Fix: [NoAI] AIOrder::SetOrderFlags always removed "Service if needed" from goto-depot orders (r16106)
- Add: [NoAI] GetURL() as possible function to info.nut. If AIs implement it, that url is shown when the AI crashes and also in the AI selection window [FS#2808] (r16093)
- Change: [NoAI] Reverse the order of the lines in the AI debug window [FS#2778] (r16091)
- Fix: [NoAI] AIDebug window profiled the blitters by invalidating itself unconditionally on repaint. OTOH it was not invalidated in other cases when needed (r16094)
- Fix: [NoAI] MOF_COND_DESTINATION was not accepted by CmdModifyOrder() (r16063)

src/script/squirrel.cpp

@@ -234,6 +234,15 @@ bool Squirrel::CallIntegerMethod(HSQOBJECT instance, const char *method_name, in
 	return true;
 }
 
+bool Squirrel::CallBoolMethod(HSQOBJECT instance, const char *method_name, bool *res, int suspend)
+{
+	HSQOBJECT ret;
+	if (!this->CallMethod(instance, method_name, &ret, suspend)) return false;
+	if (ret._type != OT_BOOL) return false;
+	*res = ObjectToBool(&ret);
+	return true;
+}
+
 /* static */ bool Squirrel::CreateClassInstanceVM(HSQUIRRELVM vm, const char *class_name, void *real_instance, HSQOBJECT *instance, SQRELEASEHOOK release_hook)
 {
 	int oldtop = sq_gettop(vm);