libOMV PrimFlags.JointLP2P does not exist. Its bit now means

VolumeDetector. VolumeDetectActive is now stored on that flag bit. with
 this change it is now sent to viewers that now gray out phantom on object
 edit. At same time fixes the fact volumedetector was not been saved on
 region db and so  was lost on restarts. libOMV needs to be fix on this and other PrimFlags

OpenSim/Region/Framework/Scenes/SceneObjectPart.cs

@@ -285,7 +285,23 @@ namespace OpenSim.Region.Framework.Scenes
         // but reversed logic: bit cleared means free to rotate
         public byte RotationAxisLocks = 0;
 
-        public bool VolumeDetectActive;
+        // WRONG flag in libOmvPrimFlags
+        private const uint primFlagVolumeDetect = (uint)PrimFlags.JointLP2P;
+
+        public bool VolumeDetectActive
+        {
+            get  
+            {
+                return (Flags & (PrimFlags)primFlagVolumeDetect) != 0;
+            }
+            set
+            {
+                if(value)
+                    Flags |= (PrimFlags)primFlagVolumeDetect;
+                else
+                    Flags &= (PrimFlags)(~primFlagVolumeDetect);
+            }
+        }
 
         public bool IsWaitingForFirstSpinUpdatePacket;
 
@@ -4742,7 +4758,7 @@ SendFullUpdateToClient(remoteClient, Position) ignores position parameter
             VolumeDetectActive = SetVD;
 
             // volume detector implies phantom we need to decouple this mess
-            if (VolumeDetectActive)
+            if (SetVD)
                 SetPhantom = true;
             else if(wasVD)
                 SetPhantom = false;