More comment cleanup in boot().
unhardcode db paths.
put pruning of paths back early: these happen to be in the source db for
the most part, so if we auto-detect source first, we lose.
The file /etc/exports is now optional and not installed by default,
so do not complain when it is absent.

issue found by and patch ok by ajacoutot@
"I don't do perl, but seems ok" deraadt@
better type safety and KNF.

Because ext2fs has only 32-bit inode numbers, use ufsino_t as in FFS.
Disk blocks are u_int32_t as well, because we don't support the 64BIT flag.
When we do, there's going to be a lot more going on than just daddr_t.

While there, add some journaling-related bits into the superblock to play with.

ok guenther
Write to the correct control module registers when configuring gpio pins.

Tested and ok joshe@
Track Connection: Keep-Alive
rc.{local,securelevel,shutdown} become examples.  If versions of them
are created in /etc, they are executed (they used to be sourced) to
avoid polluting the rc variable space.  The powerdown= and securelevel=
features are removed; they are likely only used by 2 people.  the
secureleve is now always raised; this is the only sensible default.
ok ajacoutot
/etc/rc already takes care of creating /var/run/utmp.

ok deraadt@ giovanni@
Add /etc/examples/

prodded by jmc@
powerdown is gone.
powerdown=YES has been removed.

ok deraadt
No more "securelevel" variable.
Convert ftp(1) to libressl, rather than rolling in^W^Whand rolling libssl.

ok beck@ deraadt@
Do not output anything by default, to be consistent with the other
site-specific rc.* files, the comment is enough.

ok deraadt@
Consistency.
Only set kern.securelevel=1 if it was not lowered nor bumped by
rc.securelevel,

with deraadt@
This isn't C.
not needed anymore
Enable ext2fs support on RAMDISK_CD. Requested a few months ago in
private mail. We already have mount_ext2fs there, so it's likely to
be just forgotten to be enabled.

kirby@ kindly tested that kernel still fits.

okay deraadt
quiet /etc/rc.shutdown, it may not exist.

ok deraadt@