improve large object handling in pg_upgrade

When Who What
2022-10-12 05:50:15 Michael Paquier (michael-kun) Closed in commitfest 2022-09 with status: Returned with feedback
2022-09-23 16:35:24 Nathan Bossart (bossartn) New status: Waiting on Author
2022-08-25 00:27:29 Nathan Bossart (bossartn) Changed authors to Nathan Bossart (bossartn), Jan Wieck (wieck)
2022-08-25 00:27:29 Nathan Bossart (bossartn) Changed targetversion to 16
2022-08-25 00:27:04 Nathan Bossart (bossartn) Attached mail thread a9f9376f1c3343a6bb319dce294e20ac@EX13D05UWC001.ant.amazon.com
2022-08-25 00:27:04 Nathan Bossart (bossartn) Created patch record