pgstatspack - pgstatspack: Moved install and upgrade scripts back to the

Log Message:
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Moved install and upgrade scripts back to the main directory since this makes the most sense.

Added Files:
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pgstatspack:
upgrade_pgstatspack.sh (r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatspack/pgstatspack/upgrade_pgstatspack.sh?rev=1.3&content-type=text/x-cvsweb-markup)
install_pgstats.sh (r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatspack/pgstatspack/install_pgstats.sh?rev=1.3&content-type=text/x-cvsweb-markup)

Removed Files:
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pgstatspack/bin:
upgrade_pgstatspack.sh
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatspack/pgstatspack/bin/upgrade_pgstatspack.sh)
install_pgstats.sh
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatspack/pgstatspack/bin/install_pgstats.sh)