Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Spelling fixes for sbin/

Add missing static keywords for global variables to tools in sbin/.

These tools declare global variables without using the static keyword,
even though their use is limited to a single C-file, or without placing
an extern declaration of them in the proper header file.

o Typo in the error message: s/invald/invalid.

PR: misc/91341
Submitted by: Guy Harris

Remove filtering on major device number. These are assigned randomly
these days so filtering on them makes no sense other than as a foot-shooting
device.

Parse file mode with setmode(3) for consistency with other programs
that do this kind of thing.

Userland signed char fixes for PPC build. Problems were using a char
return for getopt() and comparing to -1, ditto with fgetc() and EOF,
and using the kg_nice value from <sys/user.h>

Submitted by: Stefan Farfeleder <stefan@fafoe.narf.at>
Reviewed by: obrien, bde (a while back)
Tested lightly on: ppc, i386, make universe

Nuke whitespace at EOL.

What we're actually passing around is an ioctl request, not a command,
and it's an unsigned long, not an int.

Implement this (quoted from the updated man page): If the first token
of a rule specification is a single dash (``-''), rules are read from
the standard input and the rest of the specification is ignored.

Introduce the DEVFS "rule" subsystem. DEVFS rules permit the
administrator to define certain properties of new devfs nodes before
they become visible to the userland. Both static (e.g., /dev/speaker)
and dynamic (e.g., /dev/bpf*, some removable devices) nodes are
supported. Each DEVFS mount may have a different ruleset assigned to
it, permitting different policies to be implemented for things like
jails.

Approved by: phk