No need to reschedule the task inside asyncmeta_timeout_loop.
Frontend already does it if task was init'd with a valid interval.

Add libevent to the product list

Rename slapd/config.h to slap-config.h and update accordingly
Rename lloadd/config.h to lload-config.h and update accordingly

Update OpenSSL to recommend 1.1.1 series or later (1.0.2+ required)
Update GnuTLS to recommend 3.6.0 series or later (3.3.6+ required)
Update Cyrus-SASL to recommend 2.1.27 or later
Remove Kerberos section, since we no longer directly link to the krb5 libraries
Add section for LDAP load balancing proxy engine

To allow reloading of custom-sorted DBs from mdb_dump