Commit5df1403

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Add pg_upgrade ENABLE_SAME_CATVERSION_UPGRADES macro for testing to

allow upgrades of the same catalog version. (Doesn't work fortablespaces, as indicated by C comment.)

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Original file line number	Diff line number	Diff line change
`@@ -242,8 +242,10 @@ check_cluster_versions(void)`
`242`	`242`	`* We can't allow downgrading because we use the target pg_dumpall, and`
`243`	`243`	`* pg_dumpall cannot operate on new database versions, only older versions.`
`244`	`244`	`*/`
	`245`	`+#ifndefENABLE_SAME_CATVERSION_UPGRADES/* does not allow tablespace upgrades */`
`245`	`246`	`if (old_cluster.major_version>new_cluster.major_version)`
`246`	`247`	`pg_log(PG_FATAL,"This utility cannot be used to downgrade to older major PostgreSQL versions.\n");`
	`248`	`+#endif`
`247`	`249`
`248`	`250`	`/* get old and new binary versions */`
`249`	`251`	`get_bin_version(&old_cluster);`

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