Revert:
Revert:

    In pg_upgrade, remove pg_restore's --single-transaction option,
    as it throws errors in certain cases.

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