Document that pg_stat_*_tables.n_tup_upd includes n_tup_hot_upd.
Document that pg_stat_*_tables.n_tup_upd includes n_tup_hot_upd.

Author: Peter Geoghegan

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