npgsql - Npgsql2: Fixed another commandtimeout problem.

Log Message:
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Fixed another commandtimeout problem. This time, creating an internal Npgsqlcommand was reseting it. See http://pgfoundry.org/forum/message.php?msg_id=1005814 for more info. Thanks David Leaver (dave @nospam@ smartrak.co.nz) for heads up and test case.

Modified Files:
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Npgsql2/src/Npgsql:
NpgsqlCommand.cs (r1.45 -> r1.46)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlCommand.cs?r1=1.45&r2=1.46)