Remove troublesome type coersions from the char8 return statements. Noted in trying to port to AIX.
Remove troublesome type coersions from the char8 return statements.
Noted in trying to port to AIX.

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