npgsql - Npgsql2: [#1010700] Capture parameter names with

Log Message:
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[#1010700] Capture parameter names with NpgsqlCommandBuilder.DeriveParameters.
Thanks Brian Schloz (bschloz @nospam@ hotmail.com) for patch.
Also added nunit testcase.

Modified Files:
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Npgsql2/src/Npgsql:
NpgsqlCommandBuilder.cs (r1.14 -> r1.15)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlCommandBuilder.cs?r1=1.14&r2=1.15)
Npgsql2/testsuite/noninteractive/NUnit20:
CommandTests.cs (r1.29 -> r1.30)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/testsuite/noninteractive/NUnit20/CommandTests.cs?r1=1.29&r2=1.30)