Fix copy-and-pasteo that's causing pg_regress to lie about which file it can't read when the --temp-config argument is bad.  Noted while wondering why buildfarm member dungbeetle is failing ... this isn't why, but it is why the error report isn't very helpful ...
Fix copy-and-pasteo that's causing pg_regress to lie about which file it can't
read when the --temp-config argument is bad.  Noted while wondering why
buildfarm member dungbeetle is failing ... this isn't why, but it is why
the error report isn't very helpful ...

jmcatamney/gpdb,postmind-net/postgres-xl,postmind-net/postgres-xl,ovr/postgres-xl,oberstet/postgres-xl,xinzweb/gpdb,kmjungersen/PostgresXL,adam8157/gpdb,Chibin/gpdb,adam8157/gpdb,pavanvd/postgres-xl,ashwinstar/gpdb,lisakowen/gpdb,edespino/gpdb,xinzweb/gpdb,pavanvd/postgres-xl,arcivanov/postgres-xl,kmjungersen/PostgresXL,Postgres-XL/Postgres-XL,50wu/gpdb,lisakowen/gpdb,ovr/postgres-xl,ovr/postgres-xl,edespino/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,oberstet/postgres-xl,yuanzhao/gpdb,Chibin/gpdb,kmjungersen/PostgresXL,tpostgres-projects/tPostgres,50wu/gpdb,yazun/postgres-xl,Postgres-XL/Postgres-XL,yuanzhao/gpdb,Chibin/gpdb,xinzweb/gpdb,edespino/gpdb,adam8157/gpdb,arcivanov/postgres-xl,lisakowen/gpdb,xinzweb/gpdb,lisakowen/gpdb,yuanzhao/gpdb,zeroae/postgres-xl,ashwinstar/gpdb,lisakowen/gpdb,tpostgres-projects/tPostgres,yuanzhao/gpdb,kmjungersen/PostgresXL,50wu/gpdb,xinzweb/gpdb,arcivanov/postgres-xl,yuanzhao/gpdb,tpostgres-projects/tPostgres,kmjungersen/PostgresXL,greenplum-db/gpdb,jmcatamney/gpdb,Chibin/gpdb,yuanzhao/gpdb,techdragon/Postgres-XL,zeroae/postgres-xl,postmind-net/postgres-xl,jmcatamney/gpdb,postmind-net/postgres-xl,greenplum-db/gpdb,50wu/gpdb,arcivanov/postgres-xl,jmcatamney/gpdb,zeroae/postgres-xl,Postgres-XL/Postgres-XL,greenplum-db/gpdb,50wu/gpdb,50wu/gpdb,ashwinstar/gpdb,50wu/gpdb,zeroae/postgres-xl,pavanvd/postgres-xl,xinzweb/gpdb,jmcatamney/gpdb,snaga/postgres-xl,snaga/postgres-xl,Chibin/gpdb,lisakowen/gpdb,edespino/gpdb,yuanzhao/gpdb,yazun/postgres-xl,adam8157/gpdb,ovr/postgres-xl,postmind-net/postgres-xl,edespino/gpdb,oberstet/postgres-xl,Postgres-XL/Postgres-XL,edespino/gpdb,lisakowen/gpdb,oberstet/postgres-xl,snaga/postgres-xl,yuanzhao/gpdb,yazun/postgres-xl,adam8157/gpdb,techdragon/Postgres-XL,ashwinstar/gpdb,50wu/gpdb,jmcatamney/gpdb,Chibin/gpdb,jmcatamney/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,edespino/gpdb,adam8157/gpdb,adam8157/gpdb,arcivanov/postgres-xl,jmcatamney/gpdb,ovr/postgres-xl,adam8157/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,tpostgres-projects/tPostgres,techdragon/Postgres-XL,edespino/gpdb,greenplum-db/gpdb,yazun/postgres-xl,greenplum-db/gpdb,pavanvd/postgres-xl,yuanzhao/gpdb,Postgres-XL/Postgres-XL,greenplum-db/gpdb,Chibin/gpdb,ashwinstar/gpdb,yazun/postgres-xl,pavanvd/postgres-xl,lisakowen/gpdb,zeroae/postgres-xl,xinzweb/gpdb,snaga/postgres-xl,Chibin/gpdb,tpostgres-projects/tPostgres,Chibin/gpdb,techdragon/Postgres-XL,edespino/gpdb,edespino/gpdb,greenplum-db/gpdb,xinzweb/gpdb,techdragon/Postgres-XL,Chibin/gpdb,arcivanov/postgres-xl,snaga/postgres-xl