Don't try to continue aborted commands if status was not set.
Some XHCI hardware requires dropping the endpoint context before
adding it again.

MFC after:	3 days
Submitted by:	Kohji Okuno <okuno.kohji@jp.panasonic.com>
Deny ANCHOR flag set without UNMAP flag set in WRITE SAME commands.
Fix read overrun handling, broken by using wrong variable.

MFC after:	3 days
The new naming scheme for keymap files for use with vt(4) introduced a
collision for "no" as a country code with "NO" meaning "do not load any
keymap" (which also has been the default value in etc/defaults/rc.conf
for a long time).

The result of this collision is, that "kbdcontrol -l no" will load the
Norwegian keymap, while "keymap=no" in rc.conf was interpreted as the
lower case spelling of "NO" meaning "no keyboard" (and "no.kbd" was not
loaded).

Fix this by matching only the upper-case spelling "NO" in rc.d/syscons
when deciding whether to load a keymap file.

This will lead to "no.kbd" being loaded, if the until now valid (but
non-default) spelling "no" was used in an individual rc.conf file to mean
"no keyboard". But all alternatives I could think of introduce a larger
violation of POLA ...

Reported by:    Gyrd Thane Lange (gyrd-se at thanelange.no)
MFC after:	3 days
Pretend that we support BYTCHK=1 in WRITE AND VERIFY command.

Technically that is not true, but since we don't implement VERIFY there
at all, doing only WRITE part, this is a minor sin.
Add missing mlinks for section 9.

MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Convert from timeout(9) to callout(9).
Add support for QCOW version 1. Version 2 is partially implemented.
And because of that, it's entirely disabled for now. Both versions
are similar enough that a single header definition works for both
of them. The only "diverting" side-effect is that the union of the
two is larger than the official V1 header.

What this means for our V1 support is that we can't put the L1 table
adjacent to the V1 header (i.e. at offset 0x30 in the file), unless
we revert to hackery and klugery. Let's not. Instead, we align the L1
table at the cluster boundary. This is in line with the V2 layout and
perfectly ok for V1 anyway (ok -- as far as I've seen so far).
Due to the alignment, our V1 image seems to be 1 cluster larger than
the V1 image created by qemu-img (on average).

Compression of the clusters is not supported at this time.

MFC after:	2 months
Update the unit tests to include the QCOW (version 1) format.
This is a good safety net for when V2 is added.
Don't echo '# $FreeBSD$' as the first line into the .uu file.  Keyword
substitution applies to this file, including the echo command. Avoid
the match (and substitution) by breaking the string up into 3 parts.
Merge remote-tracking branch 'freebsd/master' into hardened/current/aslr