Simplify blank node ID stuff (and remove circular dependency of World and Node).
Simplify blank node ID stuff (and remove circular dependency of World and Node).


git-svn-id: fb6d863945102bebb9fe1d25d24b18a16295c170@2744 a436a847-0d15-0410-975c-d299462d15a1

ventosus/ingen,ventosus/ingen,drobilla/ingen,drobilla/ingen,drobilla/ingen,ventosus/ingen,drobilla/ingen,ventosus/ingen