DragonFly 5.6.1 tagged and built

[Justin Sherrill]

I tagged 5.6.1 and built it earlier today:

http://lists.dragonflybsd.org/pipermail/commits/2019-June/719058.html

This version has a corrected sshd_config and fixes a lockup bug in
ttm.  The ISO should be showing up on mirror-master.dragonflybsd.org
in the next 20 minutes or so, or you can rebuild using the normal
process on an existing 5.6 system:

> cd /usr/src
> git pull
> make buildworld
> make buildkernel
> make installkernel
> make installworld
> make upgrade

If you are still on 5.4 or earlier, you need to bring in 5.6 sources,
which is noted in the 5.6.0 announcement:

http://lists.dragonflybsd.org/pipermail/users/2019-June/358199.html