Remove -pipe on Linux, per reports from Peter.
Remove -pipe on Linux, per reports from Peter.

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