- 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

MFC r257769 to stable/10

Fix powerd/states on AMD cpus. Resolves issues with system reporting:
hwpstate0: set freq failed, err 6

Tested on FX-8150 and others.

PR: kern/167018
Submitted by: avg@
Approved by: re (gjb)

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

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

hwpstate: use CPU_FOREACH when binding to all available processors

Also, add a comment mentioning _PSD - on some systems it's enough to
put one logical CPU into a particular P-state to make other CPUs in
the same domain to enter that P-state.

Also, call sched_unbind() after the loop - sched_bind() automatically
rebinds from previous CPU to a new one, and the new arrangement of code
is safer against early loop exit.

Plus one minor style nit.

MFC after: 10 days

make it possible to actually enable hwpstate_verbose

Either via the tunable or the sysctl.

MFC after: 3 days

Introduce the new kernel sub-tree x86 which should contain all the code
shared and generalized between our current amd64, i386 and pc98.

This is just an initial step that should lead to a more complete effort.
For the moment, a very simple porting of cpufreq modules, BIOS calls and
the whole MD specific ISA bus part is added to the sub-tree but ideally
a lot of code might be added and more shared support should grow.

Sponsored by: Sandvine Incorporated
Reviewed by: emaste, kib, jhb, imp
Discussed on: arch
MFC: 3 weeks

Consolidate CPUID to CPU family/model macros for amd64 and i386 to reduce
unnecessary #ifdef's for shared code between them.

Import ACPICA 20090521.

Remove unused variables.

Found with: Coverity Prevent(tm)
CID: 4285, 4286

Extend comment in copyright notice as requested by author.

Submitted by: G.Otsuji

Add support for Phenom (Family 10h) to cpufreq.
Its a newer version provided by the author than in the PR.

PR: kern/128575
Submitted by: Gen Otsuji annona2 [at] gmail.com