Have pg_dump in binary-upgrade mode properly drop user-created extensions that might exist in the new empty cluster databases, like plpgsql.
Have pg_dump in binary-upgrade mode properly drop user-created
extensions that might exist in the new empty cluster databases, like
plpgsql.

Backpatch to 9.2.

zeroae/postgres-xl,ashwinstar/gpdb,50wu/gpdb,lisakowen/gpdb,50wu/gpdb,ashwinstar/gpdb,pavanvd/postgres-xl,xinzweb/gpdb,50wu/gpdb,techdragon/Postgres-XL,adam8157/gpdb,zeroae/postgres-xl,zeroae/postgres-xl,oberstet/postgres-xl,oberstet/postgres-xl,xinzweb/gpdb,oberstet/postgres-xl,ashwinstar/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,yazun/postgres-xl,jmcatamney/gpdb,greenplum-db/gpdb,50wu/gpdb,greenplum-db/gpdb,xinzweb/gpdb,greenplum-db/gpdb,techdragon/Postgres-XL,yazun/postgres-xl,greenplum-db/gpdb,greenplum-db/gpdb,50wu/gpdb,Postgres-XL/Postgres-XL,pavanvd/postgres-xl,50wu/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,pavanvd/postgres-xl,adam8157/gpdb,oberstet/postgres-xl,lisakowen/gpdb,ovr/postgres-xl,techdragon/Postgres-XL,lisakowen/gpdb,jmcatamney/gpdb,xinzweb/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,adam8157/gpdb,lisakowen/gpdb,techdragon/Postgres-XL,xinzweb/gpdb,adam8157/gpdb,xinzweb/gpdb,zeroae/postgres-xl,yazun/postgres-xl,adam8157/gpdb,adam8157/gpdb,ovr/postgres-xl,adam8157/gpdb,pavanvd/postgres-xl,yazun/postgres-xl,ovr/postgres-xl,50wu/gpdb,Postgres-XL/Postgres-XL,ovr/postgres-xl,techdragon/Postgres-XL,ovr/postgres-xl,yazun/postgres-xl,lisakowen/gpdb,xinzweb/gpdb,50wu/gpdb,oberstet/postgres-xl,lisakowen/gpdb,Postgres-XL/Postgres-XL,adam8157/gpdb,lisakowen/gpdb,zeroae/postgres-xl,Postgres-XL/Postgres-XL,lisakowen/gpdb,greenplum-db/gpdb,jmcatamney/gpdb,xinzweb/gpdb,greenplum-db/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,pavanvd/postgres-xl,Postgres-XL/Postgres-XL