Log Message:
-----------
Added missing support to not add casts to parameters when not needed when calling functions. This support also removes casts when passing null values.
Modified Files:
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Npgsql2/src/Npgsql:
NpgsqlCommand.cs (r1.25 -> r1.26)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlCommand.cs.diff?r1=1.25&r2=1.26)