1. Cleanup (no more FreeFd - unuseful; others). 2. FreeFile() has to do nothing with nfile (# of files opened    by VFD manager).
1. Cleanup (no more FreeFd - unuseful; others).
2. FreeFile() has to do nothing with nfile (# of files opened
   by VFD manager).

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