Fix incorrect errno definitions in ECPG manual.
Fix incorrect errno definitions in ECPG manual.

ecpgerrno.h hasn't materially changed since PostgreSQL 7.4, so this has
been wrong for a very long time.  Back-patch all the way.

Satoshi Nagayasu

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