Changes to CMakeLists to solve issue #553: Clean build in 32-bit systems
Changes to CMakeLists to solve issue #553: Clean build in 32-bit systems

darcyliu/mlpack,palashahuja/mlpack,ranjan1990/mlpack,darcyliu/mlpack,ajjl/mlpack,darcyliu/mlpack,ajjl/mlpack,palashahuja/mlpack,ajjl/mlpack,ranjan1990/mlpack,palashahuja/mlpack,ranjan1990/mlpack