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

Mark global functions and/or variables in devinfo(8) static where possible.

This allows compilers and static analyzers to do more thorough analysis.

mdoc: order prologue macros consistently by Dd/Dt/Os

Although groff_mdoc(7) gives another impression, this is the ordering
most widely used and also required by mdocml/mandoc.

Reviewed by: ru
Approved by: philip, ed (mentors)

The last big commit: let usr.sbin/ use WARNS=6 by default.

Collapse devinfo_state_t with device_state_t in order to avoid a
structure replication and improve manteneability.

Reviewed by: jhb, imp
Tested by: Riccardo Torrini <riccardo at torrini dot org>

Bump up the limit for when to print the resources for a given resource
manager in hex vs decimal to 1000 from 100 so that IRQs are printed in
decimal.

MFC after: 3 days

Sync usage() and SYNOPSIS.

Follow the rules for the .Dd macro use: use unabbreviated month names.

Submitted by: ru

Use a separate synopsis line for -u as devinfo will ignore other
options when -u is specified. Xref device(9) and devclass(9).

Remove unused local variable.

-v now also prints the pnpinfo and location information for the devices
whose bus' provide this information.

o Don't print devices that aren't attached unless run with the newly
minted -v flag.
o Print devices that don't return a name as 'unknown' in -v mode.

# Yea! Now I wont think I have 10 different ISA network adapters in my
# laptop.

Typo fix: syste -> system

mdoc(7) police: Make this look like an average manpage.

o Uncapitalize .Nd macro arguments and remove punctuation
o Minor grammar fixes.
o Sort SEE ALSO references, and add iostat(8).
o Delete punctuation at end of AUTHORS' section only line

Reviewed by: rwatson, Hiten Pandya <hiten@uk.FreeBSD.org>

Remove EOL space.
This is a whitespace only change.

Reviewed by: rwatson, Hiten Pandya <hiten@uk.FreeBSD.org>

Add a man page for the devinfo command; I'd argue devinfo is the single
most useful new command added to FreeBSD 5.0, but maybe that's just
me :-).

Submitted by: Hiten Pandya <hiten@uk.FreeBSD.org>

Reorder WARNS line for style.

Pointed out by: bde

WARNS=2 cleanup and fix potential unitialized variable bug.

PR: bin/32567
MFC after: 2 weeks

Perform a major cleanup of the usr.sbin Makefiles.
These are not perfectly in agreement with each other style-wise, but they
are orders of orders of magnitude more consistent style-wise than before.

Fixed missing DPADD.

Don't clobber CFLAGS by assigning to it using "=".

Fixed some style bugs.

Simple tool to print the device tree and resource usage by devices. Also
serves as an example of libdevinfo usage.