message: teach fix-permissions to also follow symlinks
  =
diff: #!/bin/sh
  # Fix permissions on the given directory to allow group read/write of
  # regular files and execute of directories.
  -find "$1" -exec chgrp 0 {} \;
  -find "$1" -exec chmod g+rw {} \;
  -find "$1" -type d -exec chmod g+x {} +
  +find -L "$1" -exec chgrp 0 {} \;
  +find -L "$1" -exec chmod g+rw {} \;
  +find -L "$1" -type d -exec chmod g+x {} +
  