Mark GUC external_pid_file's default as '' in postgresql.conf, rather than '(none)'.
Mark GUC external_pid_file's default as '' in postgresql.conf, rather
than '(none)'.

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