- 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

Avoid clobbering errno with a call to fprintf

PR: bin/173923
Submitted by: Garrett Cooper <yanegomi@gmail.com>
Approved by: cperciva
MFC After: 3 days

Fix warning when compiling with gcc46:
error: variable 'flags' set but not used

Approved by: dim, cperciva (mentor, blanket for pre-mentorship already-approved commits)
MFC after: 3 days

Add VIA microde update support to cpuctl(4) and cpucontrol(8).

Support have been tested with X2 CPU and QuadCore CPU.

MFC after: 1 month