Make FullPivHouseholderQR::solve returns the least-square solution instead of aborting if no exact solution exist (grafted from 6814a13155ec120700c5b2b5d7e262f52323a43d)
Make FullPivHouseholderQR::solve returns the least-square solution instead of aborting if no exact solution exist
(grafted from 6814a13155ec120700c5b2b5d7e262f52323a43d)

--HG--
branch : 3.2

robustrobotics/eigen,robustrobotics/eigen,robustrobotics/eigen,robustrobotics/eigen