preperation for complex step derivatives of clayton-oakes log-likelihood + survival prediction with new predict method (not yet there)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1271 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
CRAN prep

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1272 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
stash merged

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1273 edb9625f-4e0d-4859-8d74-9fd3b1da38cb