After discussion with Jerome and Julien it was figured out that externals
are generally bad. And buildout bootstrap will be only in one place which
makes it easier to update manually in controlled way from time to time.
Moreover buildout has ability to autoupdate itself.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@31861 20353a03-c40f-0410-a6d1-a30d3c3de9de