npgsql - Npgsql2: Bug #1010650 - support metadata for indexes.

Log Message:
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Bug #1010650 - support metadata for indexes.

Modified Files:
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Npgsql2/src/Npgsql:
NpgsqlConnection.cs (r1.29 -> r1.30)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlConnection.cs?r1=1.29&r2=1.30)
NpgsqlMetaData.xml (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlMetaData.xml?r1=1.1&r2=1.2)
NpgsqlSchema.cs (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlSchema.cs?r1=1.5&r2=1.6)