Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Move libworker_event_done_cb() from libworker.h to worker.h.

Upgrade to latest ldns (1.6.17) and unbound (1.4.22).

MFC after: 3 weeks

Move more prototypes around, and remove one that wasn't used.

Approved by: re (blanket)

Numerous fixes to make Unbound compile cleanly:

- cast through void * to silence alignment warnings (presumably false
positives resulting from poor API design)

- constify a few function arguments

- move prototypes for callbacks into a common header

- now that the prototypes are in scope, fix instances of function
definitions that don't match the prototype or what the caller
actually passes

- hide a conditionally unused global variable behind the same #ifdef
that controls its use

Approved by: re (blanket)

Minimal subset of the unbound sources.

import unbound 1.4.17