Tweak make_inh_translation_lists() to check the common case wherein parent and child attnums are the same, before it grovels through each and every child column looking for a name match.  Saves some time in large inheritance trees, per example from Greg.
Tweak make_inh_translation_lists() to check the common case wherein parent and
child attnums are the same, before it grovels through each and every child
column looking for a name match.  Saves some time in large inheritance trees,
per example from Greg.

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