Improve description of restoring pg_dumpall backups, per gripe from Havard Eidnes.
Improve description of restoring pg_dumpall backups, per gripe from
Havard Eidnes.

janebeckman/gpdb,lisakowen/gpdb,tangp3/gpdb,postmind-net/postgres-xl,rvs/gpdb,greenplum-db/gpdb,chrishajas/gpdb,rvs/gpdb,greenplum-db/gpdb,Chibin/gpdb,royc1/gpdb,lintzc/gpdb,pavanvd/postgres-xl,foyzur/gpdb,atris/gpdb,postmind-net/postgres-xl,lpetrov-pivotal/gpdb,zeroae/postgres-xl,rubikloud/gpdb,snaga/postgres-xl,lintzc/gpdb,randomtask1155/gpdb,Quikling/gpdb,yazun/postgres-xl,snaga/postgres-xl,cjcjameson/gpdb,ovr/postgres-xl,techdragon/Postgres-XL,CraigHarris/gpdb,kaknikhil/gpdb,kaknikhil/gpdb,kaknikhil/gpdb,kmjungersen/PostgresXL,royc1/gpdb,CraigHarris/gpdb,janebeckman/gpdb,yuanzhao/gpdb,Quikling/gpdb,ovr/postgres-xl,lisakowen/gpdb,lisakowen/gpdb,arcivanov/postgres-xl,50wu/gpdb,chrishajas/gpdb,tpostgres-projects/tPostgres,arcivanov/postgres-xl,edespino/gpdb,lisakowen/gpdb,chrishajas/gpdb,lintzc/gpdb,zaksoup/gpdb,jmcatamney/gpdb,xuegang/gpdb,edespino/gpdb,0x0FFF/gpdb,yuanzhao/gpdb,yazun/postgres-xl,rubikloud/gpdb,lpetrov-pivotal/gpdb,royc1/gpdb,rvs/gpdb,royc1/gpdb,yazun/postgres-xl,techdragon/Postgres-XL,royc1/gpdb,tpostgres-projects/tPostgres,xuegang/gpdb,ahachete/gpdb,rubikloud/gpdb,Postgres-XL/Postgres-XL,ovr/postgres-xl,yazun/postgres-xl,Chibin/gpdb,Quikling/gpdb,atris/gpdb,adam8157/gpdb,randomtask1155/gpdb,greenplum-db/gpdb,50wu/gpdb,50wu/gpdb,Chibin/gpdb,jmcatamney/gpdb,xuegang/gpdb,zeroae/postgres-xl,Chibin/gpdb,xinzweb/gpdb,cjcjameson/gpdb,xinzweb/gpdb,arcivanov/postgres-xl,edespino/gpdb,Postgres-XL/Postgres-XL,arcivanov/postgres-xl,edespino/gpdb,lisakowen/gpdb,tangp3/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,zaksoup/gpdb,CraigHarris/gpdb,foyzur/gpdb,arcivanov/postgres-xl,oberstet/postgres-xl,techdragon/Postgres-XL,lpetrov-pivotal/gpdb,yuanzhao/gpdb,kaknikhil/gpdb,ashwinstar/gpdb,CraigHarris/gpdb,adam8157/gpdb,randomtask1155/gpdb,zeroae/postgres-xl,janebeckman/gpdb,zeroae/postgres-xl,yuanzhao/gpdb,tpostgres-projects/tPostgres,royc1/gpdb,0x0FFF/gpdb,jmcatamney/gpdb,tangp3/gpdb,jmcatamney/gpdb,rubikloud/gpdb,lintzc/gpdb,Chibin/gpdb,royc1/gpdb,atris/gpdb,greenplum-db/gpdb,postmind-net/postgres-xl,atris/gpdb,adam8157/gpdb,Chibin/gpdb,CraigHarris/gpdb,rubikloud/gpdb,lintzc/gpdb,0x0FFF/gpdb,chrishajas/gpdb,techdragon/Postgres-XL,lintzc/gpdb,lintzc/gpdb,cjcjameson/gpdb,ovr/postgres-xl,arcivanov/postgres-xl,chrishajas/gpdb,edespino/gpdb,kmjungersen/PostgresXL,yuanzhao/gpdb,adam8157/gpdb,pavanvd/postgres-xl,lisakowen/gpdb,oberstet/postgres-xl,ahachete/gpdb,lpetrov-pivotal/gpdb,jmcatamney/gpdb,randomtask1155/gpdb,0x0FFF/gpdb,foyzur/gpdb,kaknikhil/gpdb,kaknikhil/gpdb,0x0FFF/gpdb,janebeckman/gpdb,50wu/gpdb,rvs/gpdb,tangp3/gpdb,ashwinstar/gpdb,CraigHarris/gpdb,lpetrov-pivotal/gpdb,greenplum-db/gpdb,Quikling/gpdb,atris/gpdb,zaksoup/gpdb,Quikling/gpdb,Quikling/gpdb,cjcjameson/gpdb,randomtask1155/gpdb,lintzc/gpdb,ahachete/gpdb,royc1/gpdb,50wu/gpdb,chrishajas/gpdb,chrishajas/gpdb,rubikloud/gpdb,xinzweb/gpdb,xuegang/gpdb,adam8157/gpdb,CraigHarris/gpdb,atris/gpdb,xinzweb/gpdb,foyzur/gpdb,Quikling/gpdb,snaga/postgres-xl,ashwinstar/gpdb,lpetrov-pivotal/gpdb,pavanvd/postgres-xl,tangp3/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,edespino/gpdb,greenplum-db/gpdb,Quikling/gpdb,0x0FFF/gpdb,jmcatamney/gpdb,xuegang/gpdb,adam8157/gpdb,50wu/gpdb,Chibin/gpdb,ahachete/gpdb,adam8157/gpdb,Chibin/gpdb,Quikling/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,rubikloud/gpdb,50wu/gpdb,oberstet/postgres-xl,randomtask1155/gpdb,xinzweb/gpdb,rvs/gpdb,janebeckman/gpdb,rvs/gpdb,lintzc/gpdb,xuegang/gpdb,pavanvd/postgres-xl,cjcjameson/gpdb,kaknikhil/gpdb,ovr/postgres-xl,ahachete/gpdb,tpostgres-projects/tPostgres,xinzweb/gpdb,rvs/gpdb,oberstet/postgres-xl,rvs/gpdb,tangp3/gpdb,janebeckman/gpdb,Chibin/gpdb,tangp3/gpdb,ashwinstar/gpdb,randomtask1155/gpdb,xinzweb/gpdb,chrishajas/gpdb,randomtask1155/gpdb,yazun/postgres-xl,janebeckman/gpdb,zeroae/postgres-xl,lisakowen/gpdb,zaksoup/gpdb,zaksoup/gpdb,xuegang/gpdb,kmjungersen/PostgresXL,cjcjameson/gpdb,cjcjameson/gpdb,janebeckman/gpdb,cjcjameson/gpdb,ashwinstar/gpdb,CraigHarris/gpdb,atris/gpdb,edespino/gpdb,ahachete/gpdb,rvs/gpdb,lisakowen/gpdb,greenplum-db/gpdb,xuegang/gpdb,foyzur/gpdb,50wu/gpdb,atris/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,Postgres-XL/Postgres-XL,snaga/postgres-xl,zaksoup/gpdb,Quikling/gpdb,kaknikhil/gpdb,0x0FFF/gpdb,Postgres-XL/Postgres-XL,xinzweb/gpdb,techdragon/Postgres-XL,CraigHarris/gpdb,0x0FFF/gpdb,postmind-net/postgres-xl,lpetrov-pivotal/gpdb,tangp3/gpdb,tpostgres-projects/tPostgres,cjcjameson/gpdb,ahachete/gpdb,zaksoup/gpdb,xuegang/gpdb,foyzur/gpdb,janebeckman/gpdb,yuanzhao/gpdb,rubikloud/gpdb,yuanzhao/gpdb,kaknikhil/gpdb,janebeckman/gpdb,postmind-net/postgres-xl,lpetrov-pivotal/gpdb,greenplum-db/gpdb,cjcjameson/gpdb,rvs/gpdb,foyzur/gpdb,kmjungersen/PostgresXL,oberstet/postgres-xl,foyzur/gpdb,edespino/gpdb,adam8157/gpdb,Postgres-XL/Postgres-XL,edespino/gpdb,pavanvd/postgres-xl,zaksoup/gpdb,Chibin/gpdb,snaga/postgres-xl,ashwinstar/gpdb,kmjungersen/PostgresXL,edespino/gpdb,ahachete/gpdb