Mention that tables have a visibility map fork alongside the main fork and FSM.
Mention that tables have a visibility map fork alongside the main fork
and FSM.

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