modified teleport action to support exteriors; coordinates are wrong here too

apps/openmw/mwworld/actionteleport.cpp

@@ -13,6 +13,9 @@ namespace MWWorld
 
     void ActionTeleportPlayer::ActionTeleportPlayer::execute (Environment& environment)
     {
-        environment.mWorld->changeCell (mCellName, mPosition);
+        if (mCellName.empty())
+            environment.mWorld->changeToExteriorCell (mPosition);
+        else
+            environment.mWorld->changeCell (mCellName, mPosition);
     }
 }

apps/openmw/mwworld/actionteleport.hpp

@@ -17,6 +17,7 @@ namespace MWWorld
         public:
 
             ActionTeleportPlayer (const std::string& cellName, const ESM::Position& position);
+            ///< If cellName is empty, an exterior cell is asumed.
 
             virtual void execute (Environment& environment);
     };