pgsphere - pgsphere: + add a test to create a small polygon

Log Message:
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+ add a test to create a small polygon

Modified Files:
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pgsphere/expected:
poly.out (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsphere/pgsphere/expected/poly.out?r1=1.3&r2=1.4)
pgsphere/sql:
poly.sql (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsphere/pgsphere/sql/poly.sql?r1=1.2&r2=1.3)