aspell-en-dictionary, groonga-normalizer-mysql, file-msooxml, apache-antiloris are not shareable, they write files in other parts.

Allows requesting a caucase partition and reusing an existing caucase instance.
For client-certificate-based authentication, client must be able to access backend
directly (frontend is not possible).

use slapos.recipe.build:download and slapos.recipe.build:download-unpacked instead of hexagonit.recipe.download.

- apache: add generic configuration file for backend
- erp5: make balancer use generic apache backend configuration file

so that build will not fail if the directory was left during previous
builds.

zc.buildout >= 1.6.0-dev-SlapOS-013 automatically rebuilds parts whose referring parts are modified.

The URL becomes unavailable on mirrors as soon as a new version is released.

The URL becomes unavailable on mirrors as soon as a new version is released.