adding tags dir to repos

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ordinal@136 dd220844-296b-48bf-b704-e9ffb8426404
deleting experimental.R only to resurrect an old version later

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ordinal@137 dd220844-296b-48bf-b704-e9ffb8426404
resurrecting old experimental.R file

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ordinal@138 dd220844-296b-48bf-b704-e9ffb8426404