Moved lexical_cast() to common header
Use 'configure' event to configure the queue. Its data is queue internal name.
Get rid of obscure m_queue_id, use random ID to talk to queue. Debug prints cleanup.
Added libelliptics_client into list of elliptics libraries
Added queue starter application - it starts named workers and configures them one after another.
Install queue-starter into bin directory
Depend on 2.24.7+ elliptics
v0.6.9