Clean gettext-files file in clean target
Clean gettext-files file in clean target

It used to be cleaned in maintainer-clean, but that is inconsistent
with other cleaning of NLS files in nls-global.mk, and it's also wrong
overall, because it's not part of the distribution tarball, which is
the base definition of the maintainer-clean target.

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