Log Message:
-----------
Mark autovacuum entries in pg_stat_activity so that they can be easily
distinguished from user-invoked commands. Per suggestion from Tom Lane.
Modified Files:
--------------
pgsql/src/backend/postmaster:
autovacuum.c (r1.70 -> r1.71)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/autovacuum.c?r1=1.70&r2=1.71)