- 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

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

WANRS=6 cleanup for vidcontrol(1):
- Use foo(void) instead of foo().
- Use static where applicable.
- Apply more const's when passing parameters
- signed/unsigned madness
- Avoid namespace collision by adding underscores.
- For 64-bit architectures, use %zx instead of %x
when necessary.
- When storing constants, use const instead of
variable.
- Bump WARNS?= from 2 to 6

Remove GCC'isms in CFLAGS.

- Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.

Set the default manual section for usr.sbin/ to 8.

Add a -s option for setting the current vty. This should make
life easier if a PS/2 mouse locks up the keyboard (frequent-ish,
but not repeatable).
Tidy up code (a bit) and make it -Wall

Is this a 2.2 candidate ? (although it doesn't -Wall in 2.2 because
of the lack of sys/sysproto.h

Added vidcontrol util from 1.1.5.1+

Reviewed by:
Submitted by: