Log Message:
-----------
Add documentation section on failover, replication, load balancing, and
clustering options.
Modified Files:
--------------
pgsql/doc/src/sgml:
filelist.sgml (r1.47 -> r1.48)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/filelist.sgml.diff?r1=1.47&r2=1.48)
postgres.sgml (r1.78 -> r1.79)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/postgres.sgml.diff?r1=1.78&r2=1.79)