Fix oversight in recent patch to support multiple read positions in tuplestore: in READFILE state tuplestore_select_read_pointer must save the current file seek position in the read pointer being deactivated.
Fix oversight in recent patch to support multiple read positions in
tuplestore: in READFILE state tuplestore_select_read_pointer must
save the current file seek position in the read pointer being
deactivated.

edespino/gpdb,ashwinstar/gpdb,Postgres-XL/Postgres-XL,yuanzhao/gpdb,ovr/postgres-xl,Postgres-XL/Postgres-XL,pavanvd/postgres-xl,jmcatamney/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,50wu/gpdb,kmjungersen/PostgresXL,greenplum-db/gpdb,snaga/postgres-xl,Chibin/gpdb,ovr/postgres-xl,greenplum-db/gpdb,Chibin/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,yazun/postgres-xl,zeroae/postgres-xl,snaga/postgres-xl,50wu/gpdb,jmcatamney/gpdb,oberstet/postgres-xl,yazun/postgres-xl,greenplum-db/gpdb,postmind-net/postgres-xl,Postgres-XL/Postgres-XL,Chibin/gpdb,tpostgres-projects/tPostgres,greenplum-db/gpdb,yuanzhao/gpdb,xinzweb/gpdb,ashwinstar/gpdb,50wu/gpdb,edespino/gpdb,zeroae/postgres-xl,jmcatamney/gpdb,techdragon/Postgres-XL,kmjungersen/PostgresXL,lisakowen/gpdb,edespino/gpdb,yazun/postgres-xl,oberstet/postgres-xl,Postgres-XL/Postgres-XL,tpostgres-projects/tPostgres,jmcatamney/gpdb,pavanvd/postgres-xl,kmjungersen/PostgresXL,adam8157/gpdb,adam8157/gpdb,greenplum-db/gpdb,Chibin/gpdb,Chibin/gpdb,oberstet/postgres-xl,adam8157/gpdb,adam8157/gpdb,snaga/postgres-xl,yuanzhao/gpdb,oberstet/postgres-xl,postmind-net/postgres-xl,ovr/postgres-xl,yazun/postgres-xl,Chibin/gpdb,lisakowen/gpdb,xinzweb/gpdb,pavanvd/postgres-xl,xinzweb/gpdb,lisakowen/gpdb,lisakowen/gpdb,xinzweb/gpdb,arcivanov/postgres-xl,edespino/gpdb,arcivanov/postgres-xl,edespino/gpdb,greenplum-db/gpdb,xinzweb/gpdb,snaga/postgres-xl,Chibin/gpdb,arcivanov/postgres-xl,xinzweb/gpdb,Chibin/gpdb,arcivanov/postgres-xl,edespino/gpdb,edespino/gpdb,zeroae/postgres-xl,adam8157/gpdb,xinzweb/gpdb,arcivanov/postgres-xl,adam8157/gpdb,ovr/postgres-xl,50wu/gpdb,jmcatamney/gpdb,postmind-net/postgres-xl,techdragon/Postgres-XL,Postgres-XL/Postgres-XL,pavanvd/postgres-xl,postmind-net/postgres-xl,jmcatamney/gpdb,tpostgres-projects/tPostgres,yuanzhao/gpdb,50wu/gpdb,yuanzhao/gpdb,lisakowen/gpdb,ashwinstar/gpdb,tpostgres-projects/tPostgres,50wu/gpdb,edespino/gpdb,techdragon/Postgres-XL,edespino/gpdb,Chibin/gpdb,ashwinstar/gpdb,zeroae/postgres-xl,ashwinstar/gpdb,ovr/postgres-xl,tpostgres-projects/tPostgres,lisakowen/gpdb,adam8157/gpdb,arcivanov/postgres-xl,kmjungersen/PostgresXL,adam8157/gpdb,xinzweb/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,snaga/postgres-xl,zeroae/postgres-xl,greenplum-db/gpdb,lisakowen/gpdb,yazun/postgres-xl,50wu/gpdb,ashwinstar/gpdb,50wu/gpdb,edespino/gpdb,techdragon/Postgres-XL,lisakowen/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,jmcatamney/gpdb,Chibin/gpdb,postmind-net/postgres-xl,techdragon/Postgres-XL,pavanvd/postgres-xl,kmjungersen/PostgresXL