EXECUTE of a SELECT ... INTO now draws a 'not implemented' error, rather than executing the INTO clause with non-plpgsql semantics as it was doing for the last few weeks/months.  This keeps our options open for making it do the right plpgsql-ish thing in future without creating a backwards compatibility problem.  There is no loss of functionality since people can get the same behavior with CREATE TABLE AS.
EXECUTE of a SELECT ... INTO now draws a 'not implemented' error,
rather than executing the INTO clause with non-plpgsql semantics
as it was doing for the last few weeks/months.  This keeps our options
open for making it do the right plpgsql-ish thing in future without
creating a backwards compatibility problem.  There is no loss of
functionality since people can get the same behavior with CREATE TABLE AS.

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