some interconnect issues

* unbind ldap connections after use
* optionally disable ldap referrals (necessary for Windows 2003 AD)
* retrieve all attributes when searching
* properly access LDAP_NAME_ATTR attribute

It confuses stupid people like me ;)

- delete jobhistory files when doing a snapshot
- fix bs_admin code

Conflicts:

	src/backend/bs_admin

  longer fetch all package data

- fix lastevent scale issue

Conflicts:

	src/backend/bs_srcserver

* configure memory by default for each instance
* setup kvm correctly

* add support to connect to a remote OBS

* Moved to C-base ruby-ldap library
* Introduced more configuration options to support none-AD LDAP installs
* Support additional auth mechanism (eg local passwd comparison)
* Reduced number of LDAP queries
* Fixed ping count
* Write fakepasswd to OBS DB so LDAP users can't use OBS if removed from LDAP
* Update email address if ldap changes