Behave sanely when database name is omitted from command line.
Behave sanely when database name is omitted from command line.

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