dbsamples - dbsamples: New sample database consisting of U.S.

Log Message:
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New sample database consisting of U.S. state, county, city, and zip information. Submitted by David Blewett

Added Files:
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dbsamples/us-state-county-city-zip:
README (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbsamples/dbsamples/us-state-county-city-zip/README?rev=1.1&content-type=text/x-cvsweb-markup)
us-state-county-city-zip-1.0.sql (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbsamples/dbsamples/us-state-county-city-zip/us-state-county-city-zip-1.0.sql?rev=1.1&content-type=text/x-cvsweb-markup)