npgsql - Npgsql2: Fixed misleading timeout error message.

Log Message:
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Fixed misleading timeout error message. As the only timeout which was being reported was about connection
establishment,command execution timeouts were being misinterpreted and users couldn't find easily what was going wrong. 

Modified Files:
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    Npgsql2/src/Npgsql:
        NpgsqlState.cs (r1.16 -> r1.17)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlState.cs.diff?r1=1.16&r2=1.17)
        NpgsqlState.resx (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlState.resx.diff?r1=1.2&r2=1.3)