* Updated ray tracing code. It's now good enough to use when the XYZ vector components of the scale have a difference of less then 4.5 meters.

* When a new prim is created and raytracing is called for, raytrace from the camera position to the ground in the direction of the Norm(RayEnd - RayStart).
* If we got a hit based on our camera, create the new prim at the edge of the prim we hit.
* Don't raytrace if the difference between any component of the vector exceeds 4.5meters.

OpenSim/Region/Environment/Scenes/Scene.Inventory.cs

@@ -27,6 +27,7 @@
 
 using System;
 using System.Collections.Generic;
+using Axiom.Math;
 using libsecondlife;
 using libsecondlife.Packets;
 using OpenSim.Framework;