than columns (for compatibility with newmat behavuiour). Remove U truncation,
as arma::svd_econ does it for us (whereas arma::svd does not)

fixes size of output matrix U to the size of the input, whereas
armadillo returns a square matrix.

temp matrix sizes anyway.

encapsulate their things in the armawrap namespace. This is because
operator_call.hpp needs to add a few things to the std::
namespace (type-specific implementations of max).

Also added typemaps for AWOp. Also implemented transpose methods on
AWBase (and corresponding using declarations in all the matrix/vector
classes).

operator>> for insertion into an AWCallManager.

they come after classes or structs.