revert last change - broke non-AIX platforms.
revert last change - broke non-AIX platforms.

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