Minor style policing for error messages in pg_dump tar code.  Notably, change "dumping data out of order is not supported" to "restoring data out of order is not supported", because you get that error during pg_restore not pg_dump. Also fix some comments that didn't look so good after being pgindented as perhaps they did originally.
Minor style policing for error messages in pg_dump tar code.  Notably, change
"dumping data out of order is not supported" to "restoring data out of order
is not supported", because you get that error during pg_restore not pg_dump.
Also fix some comments that didn't look so good after being pgindented as
perhaps they did originally.

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