custom system catalog table names - Mailing list pgsql-general

Hi,

How can one create a postgres build with custom system table names?
For example, instead of "pg_class", I'd like to name the table as
"foobar_class". Or instead of "pg_catalog", "foobar_catalog".

I don't care about compatiblity with pgadmin, jdbc drivers, etc. I'd
be happy just as long as I have a functional psql client.

thanks