minor modif.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/riskassessment@275 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
start new version, correct mishandling of hessian matrix.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/riskassessment@276 edb9625f-4e0d-4859-8d74-9fd3b1da38cb