Sorting functions for common use #872

Job	Run time
build (3Mi, incr-backup)	30m 50s
build (3Mi, full-backup)	27m 34s
build (3Mi, change-to-primary)	26m 52s
build (3Mi, backup-failure)	29m 41s
build (3Mi, !//)	35m 24s
build (10Mi, various-transfer-part-size)	20m 46s
build (3Mi, change-to-secondary)	26m 13s
build (200Gi, various-transfer-part-size)	22m 3s
build (3Mi, change-to-standalone)	22m 45s
	4h 2m 8s

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