Fix pg_get_serial_sequence(), which could incorrectly return the name of an index on a serial column, rather than the name of the associated sequence.  Fallout from recent changes in dependency setup for serials. Per bug #2732 from Basil Evseenko.
Fix pg_get_serial_sequence(), which could incorrectly return the name
of an index on a serial column, rather than the name of the associated
sequence.  Fallout from recent changes in dependency setup for serials.
Per bug #2732 from Basil Evseenko.

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