emacs.samples: Reliably override ".dir-locals.el".
emacs.samples: Reliably override ".dir-locals.el".

Back-patch to 9.4, where .dir-locals.el was introduced.

adam8157/gpdb,greenplum-db/gpdb,lisakowen/gpdb,adam8157/gpdb,yazun/postgres-xl,oberstet/postgres-xl,adam8157/gpdb,zeroae/postgres-xl,yazun/postgres-xl,50wu/gpdb,oberstet/postgres-xl,ashwinstar/gpdb,ashwinstar/gpdb,Postgres-XL/Postgres-XL,zeroae/postgres-xl,greenplum-db/gpdb,greenplum-db/gpdb,Postgres-XL/Postgres-XL,Postgres-XL/Postgres-XL,50wu/gpdb,xinzweb/gpdb,50wu/gpdb,xinzweb/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,lisakowen/gpdb,techdragon/Postgres-XL,lisakowen/gpdb,yazun/postgres-xl,jmcatamney/gpdb,pavanvd/postgres-xl,techdragon/Postgres-XL,50wu/gpdb,xinzweb/gpdb,ovr/postgres-xl,50wu/gpdb,ashwinstar/gpdb,50wu/gpdb,jmcatamney/gpdb,lisakowen/gpdb,xinzweb/gpdb,lisakowen/gpdb,50wu/gpdb,ashwinstar/gpdb,Postgres-XL/Postgres-XL,ovr/postgres-xl,adam8157/gpdb,lisakowen/gpdb,pavanvd/postgres-xl,yazun/postgres-xl,zeroae/postgres-xl,ashwinstar/gpdb,xinzweb/gpdb,ovr/postgres-xl,jmcatamney/gpdb,pavanvd/postgres-xl,jmcatamney/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,Postgres-XL/Postgres-XL,adam8157/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,xinzweb/gpdb,zeroae/postgres-xl,pavanvd/postgres-xl,xinzweb/gpdb,adam8157/gpdb,pavanvd/postgres-xl,adam8157/gpdb,ovr/postgres-xl,lisakowen/gpdb,adam8157/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,ovr/postgres-xl,techdragon/Postgres-XL,lisakowen/gpdb,zeroae/postgres-xl,ashwinstar/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,50wu/gpdb,yazun/postgres-xl,techdragon/Postgres-XL,techdragon/Postgres-XL,xinzweb/gpdb,oberstet/postgres-xl