Only share objects that have no other flag bits set than the byte object bit.  In particular do not share objects that have the "negative" bit set.  Fixes a bug where positive and negative long precision integers were being shared.
Only share objects that have no other flag bits set than the byte object bit.  In particular do not share objects that have the "negative" bit set.  Fixes a bug where positive and negative long precision integers were being shared.

git-svn-id: 98787b36aaefbae4b30fa755be920954cd25e1e4@1479 ae7d391e-3f74-4a2b-a0db-a8776840fd2a

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