allow to \dtS+ pg_toast.* - Mailing list pgsql-hackers

This makes toast tables a bit less special and easier to inspect.

postgres=# \dtS+ pg_toast.pg_toast_2619
 pg_toast | pg_toast_2619 | toast table | pryzbyj | permanent   | heap          | 56 kB | 

This follows commit from last year:
| eb5472da9 make \d pg_toast.foo show its indices ; and, \d toast show its main table

-- 
Justin