Implement ICloneable on MySqlCommand

[ghd258]

public object Clone()
{
DataCommand cmd = new DataCommand();
if (m_DbCommand != null)
{
if (m_DbCommand is ICloneable)
{
cmd.m_DbCommand = ((ICloneable)m_DbCommand).Clone() as DbCommand;
}
else
{
throw new ApplicationException("A class that implements IClonable is expected.");
}
}
cmd.m_DatabaseName = m_DatabaseName;
return cmd;
}

[bgrainger]

This is required for API compatibility with Connector/NET.

ICloneable was implemented on MySqlParameter recently: #567.

[ghd258]

MySql.Data can use this method, but the MySqlConnector0.47.1 version is wrong, can it be solved?

[bgrainger]

Fixed in 0.48.0.