When reading from archive, do not consider active unless already has named objects.  When building graph, validate so referenced/imported namespaces are linked
When reading from archive, do not consider active unless already has named objects.  When building graph, validate so referenced/imported namespaces are linked

jonfoster/pyxb2,pabigot/pyxb,jonfoster/pyxb1,CantemoInternal/pyxb,jonfoster/pyxb-upstream-mirror,CantemoInternal/pyxb,CantemoInternal/pyxb,balanced/PyXB,balanced/PyXB,jonfoster/pyxb2,jonfoster/pyxb2,pabigot/pyxb,jonfoster/pyxb-upstream-mirror,balanced/PyXB,jonfoster/pyxb1,jonfoster/pyxb-upstream-mirror