Log Message:
-----------
Fix pgbench to handle empty lines in script files as documented.
patches contributed by Itagaki Takahiro.
Modified Files:
--------------
pgsql/contrib/pgbench:
pgbench.c (r1.52 -> r1.53)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgbench/pgbench.c.diff?r1=1.52&r2=1.53)