Log Message:
-----------
Fixed more bugs about ResetDbType() and null values. Now, Npgsql is a little bit more conformant to sqlclient.
Modified Files:
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Npgsql2/src/Npgsql:
NpgsqlParameter.cs (r1.26 -> r1.27)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlParameter.cs?r1=1.26&r2=1.27)