Speed up findObjectByCatalogId() to get rid of the other salient bottleneck in the new pg_dump code.
Speed up findObjectByCatalogId() to get rid of the other salient
bottleneck in the new pg_dump code.

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