Fixed liblmdb nordahead flag (ITS#7734)
Fixed liblmdb to check cursor index before cursor_del (ITS#7733)
Fixed liblmdb wasted space on split (ITS#7589)
+ Fixed slapd for certs with a NULL issuerDN (ITS#7746)
Fixed slapd cn=config with empty nested includes (ITS#7739)
Fixed slapd syncrepl memory leak with delta-sync MMR (ITS#7735)
Fixed slapd-bdb/hdb to stop processing on dn not found (ITS#7741)