Create regression test TestSendAgentGroupDataUpdate() for groups agent data sending
Add missing viewer param elements for butt and breast physics.

Patch from http://opensimulator.org/mantis/view.php?id=6864 except with tabs replaced by spaces
Thanks cinderblocks!
Merge branch 'justincc-master'
Merge branch 'master' into varregion
varregion: fix bug where destination region is not found and object is
not restored to its original location.
varregion: remove unused Scene.HaveNeighbor routine. Its computation
was wrong for large regions anyway.
varregion: add lots of DEBUG level log messages. Especially for teleport.