Document that Slony can do upgrades easier _because_ it supports replication between different Postgres major versions.
Document that Slony can do upgrades easier _because_ it supports
replication between different Postgres major versions.

ovr/postgres-xl,xinzweb/gpdb,ashwinstar/gpdb,arcivanov/postgres-xl,zeroae/postgres-xl,postmind-net/postgres-xl,adam8157/gpdb,ashwinstar/gpdb,techdragon/Postgres-XL,lisakowen/gpdb,ashwinstar/gpdb,adam8157/gpdb,greenplum-db/gpdb,lisakowen/gpdb,greenplum-db/gpdb,xinzweb/gpdb,lisakowen/gpdb,jmcatamney/gpdb,50wu/gpdb,kmjungersen/PostgresXL,ovr/postgres-xl,oberstet/postgres-xl,oberstet/postgres-xl,tpostgres-projects/tPostgres,50wu/gpdb,lisakowen/gpdb,tpostgres-projects/tPostgres,arcivanov/postgres-xl,ashwinstar/gpdb,adam8157/gpdb,arcivanov/postgres-xl,kmjungersen/PostgresXL,ashwinstar/gpdb,lisakowen/gpdb,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,lisakowen/gpdb,greenplum-db/gpdb,xinzweb/gpdb,jmcatamney/gpdb,techdragon/Postgres-XL,jmcatamney/gpdb,xinzweb/gpdb,adam8157/gpdb,adam8157/gpdb,snaga/postgres-xl,adam8157/gpdb,pavanvd/postgres-xl,arcivanov/postgres-xl,xinzweb/gpdb,xinzweb/gpdb,Postgres-XL/Postgres-XL,yazun/postgres-xl,yazun/postgres-xl,adam8157/gpdb,postmind-net/postgres-xl,snaga/postgres-xl,50wu/gpdb,oberstet/postgres-xl,50wu/gpdb,jmcatamney/gpdb,kmjungersen/PostgresXL,oberstet/postgres-xl,Postgres-XL/Postgres-XL,zeroae/postgres-xl,lisakowen/gpdb,lisakowen/gpdb,greenplum-db/gpdb,oberstet/postgres-xl,adam8157/gpdb,yazun/postgres-xl,Postgres-XL/Postgres-XL,greenplum-db/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,50wu/gpdb,arcivanov/postgres-xl,ashwinstar/gpdb,ovr/postgres-xl,zeroae/postgres-xl,snaga/postgres-xl,zeroae/postgres-xl,postmind-net/postgres-xl,xinzweb/gpdb,postmind-net/postgres-xl,yazun/postgres-xl,postmind-net/postgres-xl,ovr/postgres-xl,pavanvd/postgres-xl,tpostgres-projects/tPostgres,yazun/postgres-xl,techdragon/Postgres-XL,tpostgres-projects/tPostgres,techdragon/Postgres-XL,greenplum-db/gpdb,pavanvd/postgres-xl,jmcatamney/gpdb,greenplum-db/gpdb,50wu/gpdb,xinzweb/gpdb,arcivanov/postgres-xl,ashwinstar/gpdb,techdragon/Postgres-XL,Postgres-XL/Postgres-XL,pavanvd/postgres-xl,snaga/postgres-xl,50wu/gpdb,pavanvd/postgres-xl,zeroae/postgres-xl,jmcatamney/gpdb,ovr/postgres-xl,tpostgres-projects/tPostgres,kmjungersen/PostgresXL,snaga/postgres-xl,50wu/gpdb,jmcatamney/gpdb,jmcatamney/gpdb