Log Message:-----------Document that libpq's PQntuples() might overflow.
Modified Files:-------------- pgsql/doc/src/sgml: libpq.sgml (r1.245 -> r1.246) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/libpq.sgml?r1=1.245&r2=1.246)
