Log Message:
-----------
Small streaming replication document improvements. Be more explicit that
it's asynchronous.
Modified Files:
--------------
pgsql/doc/src/sgml:
high-availability.sgml (r1.49 -> r1.50)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/high-availability.sgml?r1=1.49&r2=1.50)