2005-09-05 Boris Kirzner <borisk@mainsoft.com>
	* OleDbConvert.cs: return underlined value type in case of enum value.
	* OleDbParameter.cs:
		- Update of DbType should also update OleDbType property. 
		- Do not update parameter type is the value set is DbNull.

2005-06-21  Konstantin  Triger <kostat@mainsoft.com>

	* OleDbConvert.cs: mapping OleDbType.Guid to Types.CHAR