Correct erroneous description of MVCC Read Committed semantics.
Correct erroneous description of MVCC Read Committed semantics.

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