fixed a string matching issue in caterpillarR.R

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r2mlwin@70 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
successfully test on MLwiN 2.30

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r2mlwin@71 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
update R2MLwiN version number to 0.1-9

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r2mlwin@72 edb9625f-4e0d-4859-8d74-9fd3b1da38cb