- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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.

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.

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.

WARNS=2 cleanup and fix potential unitialized variable bug.

PR: bin/32567
MFC after: 2 weeks

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