o ROBUSTNESS: Now compileLaTeX() tries to shorten any paths as far
  as possible, e.g. ../foo/../foo/ to ../foo/ to workaround possible
  length limits of the TeX compiler.  It now also adds a symbolic link
  to TEXINPUTS that refers to the directory of the LaTeX file.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r-dots@2050 edb9625f-4e0d-4859-8d74-9fd3b1da38cb