Changed to use functions from Word structure for tag bit operations. isWords etc now ignore the mutable and negative bits.
Changed to use functions from Word structure for tag bit operations. isWords etc now ignore the mutable and negative bits.


git-svn-id: 98787b36aaefbae4b30fa755be920954cd25e1e4@448 ae7d391e-3f74-4a2b-a0db-a8776840fd2a

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