Log Message:
-----------
Prevent autovacuum from zeroing damaged pages.
Modified Files:
--------------
pgsql/src/backend/postmaster:
autovacuum.c (r1.12 -> r1.13)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/autovacuum.c.diff?r1=1.12&r2=1.13)