The changes include:
* Change license blobs in source files to mention GPLv3+ not GPLv2 only
* Add GPLv3+ license text
* Package COPYING not LICENSE as the license blobs (even the old ones)
mention COPYING specifically, it is also more common, I think
https://fedorahosted.org/freeipa/ticket/239
This is done by creating a new attribute, memberindirect, to hold this
indirect membership.
The new function get_members() can return all members or just indirect or
direct. We are only using it to retrieve indirect members currently.
This also:
* Moves all member display attributes into baseldap.py to reduce duplication
* Adds netgroup nesting
* Use a unique object name in hbacsvc and hbacsvcgroup
ticket 296
