Allow IS and FOR in Pl/PgSQL cursors, per Oracle and ANSI.  Jan-approved.
Allow IS and FOR in Pl/PgSQL cursors, per Oracle and ANSI.  Jan-approved.

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