Stopped EntityBase from implementing IScriptHost, as don't think it should, multiple objects are based on entitybase and they all don't want the baggage from IScriptHost. SceneObjectPart already implements it anyway.

Added llGetOwner function, and tested the ll functions that I added in last commit.

OpenSim/Region/Environment/Scenes/Scripting/IScriptHost.cs

@@ -9,6 +9,7 @@ namespace OpenSim.Region.Environment.Scenes.Scripting
     {
         string Name { get; set;}
         LLUUID UUID { get; }
+        LLUUID ObjectOwner { get;}
         LLVector3 AbsolutePosition { get; }
         void SetText(string text, Axiom.Math.Vector3 color, double alpha);
     }