oledb - oledb: Force a thought out order on DBTYPE->PSQL types

Log Message:
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Force a thought out order on DBTYPE->PSQL types conversion.
Problem reported by Victor Snezhko

Modified Files:
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oledb:
PgSess.cpp (r1.38 -> r1.39)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/oledb/oledb/PgSess.cpp.diff?r1=1.38&r2=1.39)