Обсуждение: pgsql: Revert change to turn autovacuum on by default.

Log Message:
-----------
Revert change to turn autovacuum on by default.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        config.sgml (r1.77 -> r1.78)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml.diff?r1=1.77&r2=1.78)
        maintenance.sgml (r1.60 -> r1.61)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/maintenance.sgml.diff?r1=1.60&r2=1.61)
    pgsql/src/backend/utils/misc:
        guc.c (r1.344 -> r1.345)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c.diff?r1=1.344&r2=1.345)
        postgresql.conf.sample (r1.188 -> r1.189)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/postgresql.conf.sample.diff?r1=1.188&r2=1.189)