Update error message for COPY with a multi-byte delimiter.
Update error message for COPY with a multi-byte delimiter.

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