* Chown method: destination user and group are checked, auth. manager request used.
* New one.group.chown method.
* New ObjectCollection class to store sets of IDs.
* New RM user.addgroup user.delgroup methods, users and groups store a cross-reference ID set.
* Clusters store a set of Host IDs. The RM part of the add/remove host functionality works, but should be re-done to avoid deadlocks.
* Fix onedb schmea for template_pool table bug.
So far groups can be managed, but resources can't be associated to a group.
Tasks done:
* New basic onegroup command
* RequestManager XML-RPC methods
* New group pool
* New GROUP authorization symbol
* Basic GroupPool tests
* Ruby OCA methods
Carlos Martín