- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

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

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

Avoid (unnecessarily) casting away const within uuid_is_nil.

Constify arguments.

Remove stale DCE 1.1 pointers to the IBM site. The URLs aren't valid
anymore. This also fixes long line bugs caused by the lengthy URLs :-)

Implement DCE 1.1 compliant UUID functions. Immediate use of these
functions is expected for uuidgen(1), mca(8) and gpt(8). Given the
generic use of UUIDs beyond the scope of the DCE 1.1 specification,
visibility of the data structure at all levels of the machine,
including firmware and the wish to not create a permanent build-
time FreeBSD-ism for DCE compliant applications by creating a new
library, it was decided that libc would be the least inappropriate
place. Also, because the UUID functions live in libc under IRIX as
well, we have maximized our portability and left as many options
open as possible.

This implementation introduces an extension not found in the
specification: the status parameter is allowed to be a NULL-
pointer. The reason for introducing the extension is because
the status is almost never of any use.

The manpage that's part of this commit is a minimal place-holder
and is further fleshed-out in the near future.

Approved by: re@
Contributed by: Hiten Mahesh Pandya <hiten@unixdaemons.com>
Sponsored by: marcel :-)
Tested on: alpha, i386, ia64