Prevent to_char(interval) from dumping core on month-related formats when a zero-month interval is given.  Per discussion with Karel. Also, some desultory const-labeling of constant tables.  More could be done along that line.
Prevent to_char(interval) from dumping core on month-related formats
when a zero-month interval is given.  Per discussion with Karel.
Also, some desultory const-labeling of constant tables.  More could be
done along that line.

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