Clarify description of SET CONSTRAINTS.  Point out that it is still missing the ability to schema-qualify constraint names.
Clarify description of SET CONSTRAINTS.  Point out that it is still
missing the ability to schema-qualify constraint names.

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