RP-22 Adding the final orthogonalisation as in the code of Soren. Still failures.
RP-22
Adding the final orthogonalisation as in the code of Soren. Still failures.

git-svn-id: 9eeea04daec118c8b99ac1589bcc03db7f3e68a4@76 3149698f-976c-419d-aa71-eec1decff2c2

MPI-IS/Grassmann-Averages-PCA,MPI-IS/Grassmann-Averages-PCA