Improve warning messages from tsearch trigger function; clean up some casting infelicities.  Allow char(n) fields to be indexed.  Per Bjoern Metzdorf.
Improve warning messages from tsearch trigger function; clean up some
casting infelicities.  Allow char(n) fields to be indexed.  Per
Bjoern Metzdorf.

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