util-linux, apr-util, rdiff-backup, apache
mysql-5.5, stunnel, openldap, libpng

Conflicts:
	component/dash/buildout.cfg
	component/dcron/buildout.cfg
	component/dropbear/buildout.cfg
	component/glib/buildout.cfg
	component/openssl/buildout.cfg
	component/popt/buildout.cfg
	component/rdiff-backup/buildout.cfg
	software/apache-frontend/software.cfg

i.e, enable cache.

Will retry format until it works.

Fixes 29da1c75.

Those parameters now work if used from buildout and recipes that don't support serialization.