Log Message:
-----------
Adjust pgbench so it won't spit up on non-select queries returning
tuples, which is entirely possible with custom scripts (consider
RETURNING, EXPLAIN, etc).
Modified Files:
--------------
pgsql/contrib/pgbench:
pgbench.c (r1.60 -> r1.61)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgbench/pgbench.c.diff?r1=1.60&r2=1.61)