Brazil to attract more private-sector investments over the next eight years, compensating in part for lack of domestic savings, but there’s unlikely to be a major appreciation of the Brazilian currency, according to economists at Brazil’s Itau Unibanco Holdings SA (ITUB, ITUB4.BR). As capital flows into Brazil–seeking investment opportunities as well as attracted by the opportunities related to the coming World Cup and Olympic Games and the development of the major offshore oilfields–there’s…