Log Message:
-----------
fixed minor bug where the delete procedure fails with column "spid" does not exist the real column name is snapid
Modified Files:
--------------
pgstatspack/sql:
pgstatspack_delete_old_stats.sql (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatspack/pgstatspack/sql/pgstatspack_delete_old_stats.sql.diff?r1=1.1&r2=1.2)