Enable grab feature (Ctrl+Drag) for non-physical link-sets and add code to handle spin (Ctrl+Shift+Drag)

Signed-off-by: BlueWall <jamesh@bluewallgroup.com>

OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs

@@ -2672,16 +2672,20 @@ namespace OpenSim.Region.Framework.Scenes
                     }
                     else
                     {
-                        //NonPhysicalGrabMovement(pos);
+                        NonPhysicalGrabMovement(pos);
                     }
                 }
                 else
                 {
-                    //NonPhysicalGrabMovement(pos);
+                    NonPhysicalGrabMovement(pos);
                 }
             }
         }
 
+        /// <summary>
+        /// Apply possition for grabbing non-physical linksets (ctrl+drag)
+        /// </summary>
+        /// <param name="pos">New Position</param>
         public void NonPhysicalGrabMovement(Vector3 pos)
         {
             AbsolutePosition = pos;
@@ -2781,16 +2785,26 @@ namespace OpenSim.Region.Framework.Scenes
                     }
                     else
                     {
-                        //NonPhysicalSpinMovement(pos);
+                        NonPhysicalSpinMovement(newOrientation);
                     }
                 }
                 else
                 {
-                    //NonPhysicalSpinMovement(pos);
+                    NonPhysicalSpinMovement(newOrientation);
                 }
             }
         }
 
+        /// <summary>
+        /// Apply rotation for spinning non-physical linksets (ctrl+shift+drag)
+        /// </summary>
+        /// <param name="newOrientation">New Rotation</param>
+        private void NonPhysicalSpinMovement(Quaternion newOrientation)
+        {
+            UpdateGroupRotationR(newOrientation);
+            m_rootPart.SendTerseUpdateToAllClients();
+        }
+
         /// <summary>
         /// Set the name of a prim
         /// </summary>