Remove freeBackends counter from the sinval shared memory area.  We used to use it to help enforce superuser_reserved_backends, but since 8.1 it's just been dead weight.
Remove freeBackends counter from the sinval shared memory area.  We used to
use it to help enforce superuser_reserved_backends, but since 8.1 it's
just been dead weight.

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