Log Message:
-----------
Update comment about outer joins in description of geqo_threshold.
Modified Files:
--------------
    pgsql/doc/src/sgml:
        config.sgml (r1.42 -> r1.43)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml.diff?r1=1.42&r2=1.43)