Make this more efficient for small structures. No longer attempts to share objects outside the root given as argument.
Make this more efficient for small structures. No longer attempts to share objects outside the root given as argument.


git-svn-id: 98787b36aaefbae4b30fa755be920954cd25e1e4@43 ae7d391e-3f74-4a2b-a0db-a8776840fd2a

polyml/polyml,mn200/polyml,polyml/polyml,polyml/polyml,mn200/polyml,mn200/polyml,polyml/polyml,mn200/polyml,dcjm/polyml,dcjm/polyml,dcjm/polyml,dcjm/polyml