move to roxygen + new option args for ipcw

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/riskscore@80 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fixed mistakes found during phd course

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/riskscore@81 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
deleted obsolete files

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/riskscore@82 edb9625f-4e0d-4859-8d74-9fd3b1da38cb