include object properties in closure, ensuring axioms that use properties not in the refset are not filtered out
include object properties in closure, ensuring axioms that use properties not in the refset are not filtered out

git-svn-id: f705032614e1ff11fed11a7e506afa6fa6966044@225 18f1da76-1bb4-b526-5913-e828fe20442d

dhimmel/owltools,dhimmel/owltools,owlcollab/owltools,dhimmel/owltools,owlcollab/owltools,fbastian/owltools,owlcollab/owltools,fbastian/owltools,dhimmel/owltools,owlcollab/owltools,dhimmel/owltools,fbastian/owltools,fbastian/owltools,fbastian/owltools,owlcollab/owltools,owlcollab/owltools,fbastian/owltools,dhimmel/owltools