BUG #7874: GUC's not in database dumps

The following bug has been logged on the website:

Bug reference: 7874
Logged by: Joe Van Dyk
Email address: joe(at)tanga(dot)com
PostgreSQL version: 9.2.1
Operating system: OSX, Linux
Description:

If I run:
alter database foo set my.name = 'joe';

that GUC isn't available inside backups of that database.

It does show up when doing "pg_dumpall -s".

It does *not* show up when doing "pg_dumpall -g"

$ createdb foo
$ psql foo
psql (9.2.1)

foo=# alter database foo set my.name = 'joe';
ALTER DATABASE

foo=# \q

$ pg_dump foo > foo.sql

$ cat foo.sql
--
-- PostgreSQL database dump
--

SET statement_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SET check_function_bodies = false;
SET client_min_messages = warning;

--
-- Name: plpgsql; Type: EXTENSION; Schema: -; Owner:
--

CREATE EXTENSION IF NOT EXISTS plpgsql WITH SCHEMA pg_catalog;

--
-- Name: EXTENSION plpgsql; Type: COMMENT; Schema: -; Owner:
--

COMMENT ON EXTENSION plpgsql IS 'PL/pgSQL procedural language';

--
-- Name: public; Type: ACL; Schema: -; Owner: joe
--

REVOKE ALL ON SCHEMA public FROM PUBLIC;
REVOKE ALL ON SCHEMA public FROM joe;
GRANT ALL ON SCHEMA public TO joe;
GRANT ALL ON SCHEMA public TO PUBLIC;

--
-- PostgreSQL database dump complete
--