Avoids the regeneration of the keys on reboot.  I guess this is what
people would expect.  ;)

* Sane defaults like FreeBSD: off, no root login, no passwords.

* Fix a bug in <sshdkeyonly/> handling.  Yes, it has been broken for
  ages.

* Boot into the installer by default; it can still be aborted.

* Remove the dysfunct rescue installer.  The normal installer
  now has a better rescue tool called "Import configuration".

* Move and rework the installer launcher as rc.installer.  It
  can be called at any time if needed.

Instead of leaving the doors wide open, we make <disableconsolemenu/>
the default and bring back the killswitch for everbody who doesn't
like it.

We can dash out jails, use them for development or production
environments even.  Sure, they may not support some priviledged
operation, but keeping weird glue around that is probably not
in all the places it should be is weird.

First impressions are the most important ones...

etcmfs has been known to break when /etc gets too big, so
just remove it with a general /tmp partition that is set via
the tools.git through rc.conf and slap unionfs mounts on top.

Make "src" the implicit "/usr/local" so that nobody can
sneak in weird files in the base file system or potentially
overwrite them.

This is the last time, I swear...  :)