Log Message:-----------add suuport for pg_stat_statements
Modified Files:-------------- pgstatspack/sql: pgstatspack_delete_old_stats.sql (r1.2 -> r1.3) (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatspack/pgstatspack/sql/pgstatspack_delete_old_stats.sql?r1=1.2&r2=1.3)
