* OdbcCommand.cs: No longer use OdbcConnection.Datareader, in order

* OdbcCommand.cs: No longer use OdbcConnection.Datareader, in order
to fix signature of OdbcConnection
* OdbcDataReader.cs: No longer use ODbcConnection.Datareader, in
order to fix signature of OdbcConnection
* OdbcConnection.cs: Signature fixes: removed DataReader property,
added setter for ConnectionTimeout, made transaction internal
* OdbcParameter.cs: reduced accessibility of Bind method to
internal, added setter for IsNullable
* OdbcParameterCollection.cs: made default ctor and Bind method
internal

svn path=/trunk/mcs/; revision=26991