I wrote:
> Another way to fix that inconsistency is to consider that
> allow_system_table_mods should gate table creations not just drops in
> pg_catalog. I'm not real sure why this wasn't the case all along ...
Uh, scratch that last comment: actually, allow_system_table_mods *did*
gate that, in every existing release. I bitched upthread about the fact
that this was changed in 9.3, and did not hear any very satisfactory
defense of the change.
regards, tom lane