added poisson score()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@1104 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
started bamlss

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@1105 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
bamlss renaming 2

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@1106 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
bamlss renaming 3

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@1107 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
bamlss 4

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@1108 edb9625f-4e0d-4859-8d74-9fd3b1da38cb