move use of ln from 4th to 3rd form so it works on OS X 10.8.

git-latexdiff

@@ -290,12 +290,12 @@ verbose "Checking out old and new version"
 
 cd old || die "Cannot cd to old/"
 # in case the work directory contained uncommited important files
-ln -s -t . "$initial_dir"/*
+ln -s "$initial_dir"/* .
 
 git --git-dir="$git_dir" --work-tree=. checkout "$old" -- . || die "checkout failed for old/"
 verbose_progress
 cd ../new || die "Cannot cd to new/"
-ln -s -t . "$initial_dir"/*
+ln -s "$initial_dir"/* .
 if test "$new" != "--"; then
     # if new == "--" then diff working dir (already there thanks to ln
     # -s above).