o CONSISTENCY: Now createLink(..., method="windows-shortcut") returns
  the path/pathname to the link (and not the target) just like it does
  for the other types of file links.  By link we here mean the
  path/pathname without the *.lnk extension.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r-dots@1978 edb9625f-4e0d-4859-8d74-9fd3b1da38cb