Reduce the chunk header sizes on all memory context types

When Who What
2022-08-29 09:02:25 David Rowley (davidrowley) Closed in commitfest 2022-09 with status: Committed
2022-08-29 09:02:24 David Rowley (davidrowley) Changed committer to davidrowley
2022-08-09 12:45:11 David Rowley (davidrowley) Changed authors to Andres Freund (andresfreund), David Rowley (davidrowley)
2022-08-09 12:44:53 David Rowley (davidrowley) Attached mail thread CAApHDvpjauCRXcgcaL6+e3eqecEHoeRm9D-kcbuvBitgPnW=vw@mail.gmail.com
2022-08-09 12:44:53 David Rowley (davidrowley) Created patch record