Lapack APIs to Eigen QR

Submitted by Desire NUENTSA

Assigned to Desire NUENTSA

Link to original bugzilla bug (#662)
Version: 3.2

Description

Some Lapack APIs to Eigen QR and Eigenvalues. Before pushing this, we should find a way to build in a stable way the Householder reflectors.

Depends on

#661

Blocking

#62