Done:
Done:

> * -Add schema, cast, and conversion backslash commands to psql (Christopher)

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