npgsql - Npgsql2: Added support for setting search path in connection

Log Message:
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Added support for setting search path in connection string. You can use now searchpath=blabla in your connection
string.You don't need to specify public search path as it is automatically added if you specify a custom search path.
ThanksAndrus Moor (kobruleht2 at hot dot ee) for patch. 

Modified Files:
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    Npgsql2/src/Npgsql:
        NpgsqlConnection.cs (r1.9 -> r1.10)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlConnection.cs.diff?r1=1.9&r2=1.10)
        NpgsqlConnector.cs (r1.7 -> r1.8)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlConnector.cs.diff?r1=1.7&r2=1.8)
        NpgsqlConnectionString.cs (r1.7 -> r1.8)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlConnectionString.cs.diff?r1=1.7&r2=1.8)
    Npgsql2/testsuite/noninteractive/NUnit20:
        ConnectionTests.cs (r1.1 -> r1.2)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/testsuite/noninteractive/NUnit20/ConnectionTests.cs.diff?r1=1.1&r2=1.2)