fix cxrs to have all subfields created even if no cxrs present, so for example...

fix cxrs to have all subfields created even if no cxrs present, so for example isempty(cxrs.vtor.fit.data) would work always

git-svn-id: https://spcsvn.epfl.ch/repos/TCV/gdat/trunk@5082 d63d8f72-b253-0410-a779-e742ad2e26cf