* added complete implementation of sparse matrix product (with a little glue in Eigen/Core) * added an exhaustive bench of sparse products including GMM++ and MTL4 => Eigen outperforms in all transposed/density configurations !
replaced the QTestLib framework my custom macros and a (optional) custom script to run the tests from ctest.
* updated Cholesky to support complex * correct result_type for abs and abs2 functors