we are keeping two things in the contrib directory
1) the library-of-babel.org file, this is with the goal of lowering
the barrier of entry for contribution of functions to the library
of babel
2) we are also keeping a langs directory in the contrib directory
because some language files do not have FSF copyright assignment
-- current org-babel-oz.el is the only such file
This deals with external process :results value mode for R, ruby,
python, perl and clojure: if the shell process has a non-zero exit
code, a buffer containing stderr is displayed.
At this commit, org-babel-shell-command-on-region is a direct copy of
shell-command-on-region. In addition to switching to use the org-babel
version, we change the argument passed so that they agree with the
docstring of s-c-o-r.
Despite the change in arguments, the same behaviour results because
s-c-o-r does not behave as documented in emacs23. Future commits will
be able to fix these bugs in the org-babel version, as necessary.