(ITS#8747) LDAP load balancer daemon (lloadd)

Full_Name: Ondrej Kuznik Version: master OS: URL: https://github.com/mistotebe/openldap/tree/lloadd Submission from: (NULL) (82.10.24.68)

The 'lloadd' branch linked above contains the load balancer code that is now ready for review.

This adds a new server to the OpenLDAP project, a load balancing proxy (prototype). Also, the tls branch contains the work in progress toward StartTLS/ldaps support (which works apart from certificate checking) and can be merged once ITS#8746 has been closed.

To test, make sure you have libevent >= 2.0 installed and regenerate the configure script which now accepts the --enable-balancer option. The code in question has only been compiled/tested on Linux so far.