- update manual


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pomp@902 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- remove some outdated remarks in 'pomp' man page
- put NEWS into Rd format


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pomp@903 edb9625f-4e0d-4859-8d74-9fd3b1da38cb