update

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/correg@258 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
cleaning some useless functions

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/correg@259 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
re-ordering identifiability

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/correg@260 edb9625f-4e0d-4859-8d74-9fd3b1da38cb