Implement proper persistence of the following prim properties:

Floating text, Rotation, Texture animation, Particle System
This will make "Eye Candy" scripts work without modification in
XEngine. The use of the CHANGED_REGION_RESTART hack is no longer
needed. Implemented in MySQL only, hovertext also in SQLite.

OpenSim/Region/ScriptEngine/Interfaces/IScriptInstance.cs

@@ -53,6 +53,7 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
     public interface IScriptInstance
     {
         bool Running { get; set; }
+        bool ShuttingDown { get; set; }
         string State { get; set; }
         IScriptEngine Engine { get; }
         UUID AppDomain { get; set; }