* lisp/org.el (org-promote):
(org-demote): Turn off after-change-functions to speed up the
reindentation of text.
This is mainly toob-oz: brought up to date with the rest of Babel
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
