BulletSim: correct angular vertical attraction to properly correct an upside down vehicle.
BulletSim: rework some parameter setting implementation moving functionality that was in BSScene to BSParam. Remove unused parameters that were passed to the unmanaged code. Update DLLs and SOs for the new param block.
BulletSim: add debugging looking for doorway sculpty problems
BulletSim: remove degenerate triangles from meshes. This fixes the
invisible barriers in sculptie doorways (Mantis 6529).
Bump up level-of-detail for physical meshes to 32 (the max). This
fixes the invisible barriers that showed up in prim cut arches.
NOTE: the default LOD values are removed from OpenSimDefaults.ini.
   If you don't change your OpenSimDefaults.ini, you will continue
   to see the arch problem.