A small correction to the short installation guide.
A small correction to the short installation guide.

The pooler_port GUC needs to be different on the coordinator and
datanodes when installing on a single system.  Finally
pgxc_pool_reload() must be executed directly on each datanode.

Patch by Mark Wong

pavanvd/postgres-xl,pavanvd/postgres-xl,oberstet/postgres-xl,zeroae/postgres-xl,pavanvd/postgres-xl,ovr/postgres-xl,oberstet/postgres-xl,yazun/postgres-xl,pavanvd/postgres-xl,yazun/postgres-xl,oberstet/postgres-xl,ovr/postgres-xl,zeroae/postgres-xl,yazun/postgres-xl,ovr/postgres-xl,ovr/postgres-xl,oberstet/postgres-xl,yazun/postgres-xl,yazun/postgres-xl,ovr/postgres-xl,oberstet/postgres-xl,zeroae/postgres-xl,zeroae/postgres-xl,pavanvd/postgres-xl,zeroae/postgres-xl