Thread: npgsql - Npgsql2: Only produce SQLSent string from stringbuilder if

Log Message:
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Only produce SQLSent string from stringbuilder if needed.

Modified Files:
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    Npgsql2/src/Npgsql:
        NpgsqlMediator.cs (r1.7 -> r1.8)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlMediator.cs.diff?r1=1.7&r2=1.8)
        NpgsqlQuery.cs (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlQuery.cs.diff?r1=1.5&r2=1.6)