Log Message:
-----------
Clearify how processes are started by autovacuum, and what the effect
of autovacuum_max_workers parameter is.

Per discussion with Alvaro.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        maintenance.sgml (r1.86 -> r1.87)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/maintenance.sgml?r1=1.86&r2=1.87)

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Next:	From: Magnus Hagander	Date: 2008-12-08 20:31:00
	Subject: pgsql: Clearify how processes are started by autovacuum, and what the
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	Subject: pgsql: Teach pgstat_vacuum_stat to not bother scanning pg_proc in the