Make use of LATERAL in information_schema.sequences view.
Make use of LATERAL in information_schema.sequences view.

It said "XXX: The following could be improved if we had LATERAL" ...
so let's do that.

No catversion bump since either version of the view works fine.

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