The matrices and vectors compared should have the same size.
Functions mean_square have been moved to 'testhelper.hpp'. Created the functions 'equal_to' to test if matrices or vectors are equals (based on mean_square).
Merge remote-tracking branch 'upstream/develop' into develop
Added tolerance to functions 'equal_two' and restored in tests.
Merge branch 'develop' of https://github.com/jdurancomas/ublas into develop
Merge pull request #17 from jdurancomas/develop

Develop