Split out tiebreaker comparisons from comparetup_* functions

When Who What
2023-08-22 03:22:00 John Naylor (john.naylor) Closed in commitfest 2023-09 with status: Committed
2023-08-15 09:53:47 John Naylor (john.naylor) Added john.naylor as committer
2023-08-15 09:53:44 John Naylor (john.naylor) New status: Ready for Committer
2023-08-01 21:06:38 Daniel Gustafsson (d_gustafsson) Closed in commitfest 2023-07 with status: Moved to next CF
2023-06-30 06:48:01 John Naylor (john.naylor) Changed authors to John Naylor (john.naylor)
2023-06-30 06:47:36 John Naylor (john.naylor) Attached mail thread 83d80853-a45c-d85c-68eb-59acfe7fb5fb@gmail.com
2023-06-30 06:47:36 John Naylor (john.naylor) Created patch record