Improve error message for cp or rm failur during create/drop database, per recent discussions.
Improve error message for cp or rm failur during create/drop database,
per recent discussions.

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