Allow second and subsequent names in a qualified (dotted) name to be ColLabel instead of just ColId --- that is, any keyword can appear after a dot and it will be taken as an identifier.  Fixes problems with names that are okay as standalone function names but fail when qualified.
Allow second and subsequent names in a qualified (dotted) name to be
ColLabel instead of just ColId --- that is, any keyword can appear after
a dot and it will be taken as an identifier.  Fixes problems with names
that are okay as standalone function names but fail when qualified.

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