fixed binding of variables alnumx and specialchars in textvector

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lsa@874 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fixed binding of variables alnumx and specialchars in textvector

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lsa@875 edb9625f-4e0d-4859-8d74-9fd3b1da38cb