Update for 7.4 release.
Update for 7.4 release.

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