Please review 48906 (take 3): Allow nsslapd-db-locks to be configurable online

[thierry bordaz]

Following Noriko recommendation to update dblayer_private from ldbm_info 
rather that updating directly the dblayer_private.
So this patch adds a new 'li' field: li_dblock, that is used to update 
the dblayer_private->dblayer_lock_config

https://fedorahosted.org/389/ticket/48906

https://fedorahosted.org/389/attachment/ticket/48906/0004-Ticket-48906-Allow...