* bug fix in csv_data()
* added montero_et_al dataset to opmdata


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/opm@570 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
further improvements in csv_data() etc.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/opm@571 edb9625f-4e0d-4859-8d74-9fd3b1da38cb