apt_get_permissive: documentation bug
Redmine#5701: rename bin_dir to dir_bin for consistency with def.cf
Redmine#5701: only set permissions for agents and optional_agents, not all of dir_bin
Redmine#5701: set recursive permissions for sys.workdir/bin if it is /var/cfengine/bin
Redmine#5731: on RHEL 4, Yum can not be --quiet