Add mention of -F not supported by pg_dumpall.  Code already disallows it.
Add mention of -F not supported by pg_dumpall.  Code already disallows it.

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