- update the vignettes to go with version 0.50-1 of 'pomp'


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pomp@934 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- minor fix


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pomp@935 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- update vignettes 
- try to fix strange ou2-nlf test results


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pomp@936 edb9625f-4e0d-4859-8d74-9fd3b1da38cb