Re-add explicit declaration of filename_completion_function(), which seems to be missing in some header files (on OpenBSD 2.8?).
Re-add explicit declaration of filename_completion_function(), which seems
to be missing in some header files (on OpenBSD 2.8?).

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