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

Merge the projects/release-pkg branch to head.

This allows packaging the base system with pkg(8), including
but not limited to providing the ability to provide upstream
binary update possibilities for non-tier-1 architectures.

This merge is a requirement of the 11.0-RELEASE, and as such,
thank you to everyone that has tested the project branch.

Documentation in build(7) etc. is still somewhat sparse, but
updates to those parts will follow.

Sponsored by: The FreeBSD Foundation

Remove WARNS inherited fine by ../Makefile.inc.

Sponsored by: EMC / Isilon Storage Division

Revert r284417 it is not necessary anymore

Enforce overwritting SHLIBDIR

Since METAMODE has been added, sys.mk loads bsd.mkopt.mk which ends load loading
bsd.own.mk which then defines SHLIBDIR before all the Makefile.inc everywhere.

This makes /lib being populated again.

Reported by: many

Convert libraries to use LIBADD
While here reduce a bit overlinking

Move my simple logging API to a separate library. It is now already used
by hastctl(8), hastd(8) and auditdistd(8) and will soon be also used
by casperd(8) and its services. There is no documentation and pjdlog.h
header file is not installed in /usr/include/ to keep it private.
Unfortunately we don't have /lib/private/ at this point, only
/usr/lib/private/, so the library is installed in /lib/.

Sponsored by: The FreeBSD Foundation