Prevent doing logrotate and backup at the same moment or it will generate
process management conflict

Conflicts:
	component/mariadb/buildout.cfg
	software/erp5/software.cfg

modify workaround for bug in LibreOffice 3.5 so that it works with the system whose gcc is less than 4.5.

With Lib0 3.5 released, the issues found to convert some documents with versions 3.4 or less is not happening anymore.
Then, as Lib0 3.5 is working as expected and the commit e6481f91 is keeping the backward compatibility for cloudooo configuration, it will be revert and Lib0 will be installed in default installation

This reverts commit ad4fd161.

Conflicts:
	component/mariadb/buildout.cfg
	component/sphinx/buildout.cfg
	slapos/recipe/generic_mysql/template/my.cnf.in
	software/erp5/software.cfg

set 'default-zpublisher-encoding utf-8' otherwise we can have exception in Localizer with non iso-8859-15 characters. set other encoding variables as well.

Install is updatable, so it is safe to call it this way.