Reverse out yesterday's patch from Horak Daniel, since it fails to compile on any machine without a <features.h> header. If this header is actually necessary on Windows, perhaps an #if test is in order.
Reverse out yesterday's patch from Horak Daniel, since
it fails to compile on any machine without a <features.h> header.
If this header is actually necessary on Windows, perhaps an #if test
is in order.

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