Fix script "Running" behavior

Unchecking "Running" box in script editor now persists. This fixes http://opensimulator.org/mantis/view.php?id=6057

OpenSim/Region/ScriptEngine/Interfaces/IScriptInstance.cs

@@ -63,6 +63,16 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
         /// </summary>
         bool Running { get; set; }
 
+        /// <summary>
+        /// Gets or sets a value indicating whether this
+        /// <see cref="OpenSim.Region.ScriptEngine.Interfaces.IScriptInstance"/> is run.
+        /// For viewer script editor control
+        /// </summary>
+        /// <value>
+        /// <c>true</c> if run; otherwise, <c>false</c>.
+        /// </value>
+        bool Run { get; set; }
+
         /// <summary>
         /// Is the script suspended?
         /// </summary>