fix ambiguous calls in the functors by prefixing function calls with internal::
fix ambiguous calls in the functors by prefixing function calls with internal::

mjbshaw/Eigen,mjbshaw/Eigen,madlib/eigen_backup,mjbshaw/Eigen,madlib/eigen_backup,mjbshaw/Eigen,madlib/eigen_backup,madlib/eigen_backup,rotorliu/eigen,rotorliu/eigen,rotorliu/eigen,rotorliu/eigen