- 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

Support VTOC volume names. This can be useful to distinguish multiple
disks in a system. Solaris' format(1m) displays the volume names in
the disk overview.

MFC after: 1 month

/* -> /*- for copyright notices, minor format tweaks as necessary

Add SVR4-compatible VTOC-style elements to the Sun label. The
FreeBSD kernel doesn't use them but sunlabel(8) shortly will,
and both these files are used by sunlabel(8).

Use __FBSDID().

Approved by: phk

Use #defines from <sys/sun_disklabel.h> instead of private ones.

Functions to encode and decode Sun Microsystems disk partitioning data
structures.

Mostly by: jake