Add "few":
Add "few":

> * Reserve last few process slots for super-user if max_connections reached

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