Teach eval_const_expressions to simplify BooleanTest nodes that have constant input.  Seems worth doing because rule rewriter inserts IS NOT TRUE tests into WHERE clauses.
Teach eval_const_expressions to simplify BooleanTest nodes that have
constant input.  Seems worth doing because rule rewriter inserts
IS NOT TRUE tests into WHERE clauses.

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