Bugfix i PCR/PLSR-plott

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/umb-statistics@36 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Bugfix i RMSEP og PCR/PLSR-plott

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/umb-statistics@37 edb9625f-4e0d-4859-8d74-9fd3b1da38cb