Improve sepgsql logging so it follows the behaviour of selinux's logging.

When Who What
2022-01-12 19:24:45 Tom Lane (tgl) Closed in commitfest 2022-01 with status: Committed
2022-01-12 19:24:45 Tom Lane (tgl) Changed committer to tgl
2022-01-06 00:47:47 Jacob Champion (jchampion) Added jchampion as reviewer
2021-12-02 14:19:06 Daniel Gustafsson (d_gustafsson) Closed in commitfest 2021-11 with status: Moved to next CF
2021-10-04 14:46:23 Jaime Casanova (jcasanov) Closed in commitfest 2021-09 with status: Moved to next CF
2021-08-03 02:34:08 Masahiko Sawada (masahikosawada) Closed in commitfest 2021-07 with status: Moved to next CF
2021-04-15 14:08:22 Dave Page (dpage) Changed authors to Dave Page (dpage)
2021-04-15 14:08:04 Dave Page (dpage) Attached mail thread CA+OCxowsQoLEYc=jN7OtNvOdX0Jg5L7nMYt++=k0X78HGq-sXg@mail.gmail.com
2021-04-15 14:08:04 Dave Page (dpage) Created patch record