Log Message:
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Added upgrade script for existing userbase.
Added Files:
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pgstatspack:
upgrade_pgstatspack.sh (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatspack/pgstatspack/upgrade_pgstatspack.sh?rev=1.1&content-type=text/x-cvsweb-markup)