- 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

Reverse the order of the first two arguments to _sparc64_enter_uts().
The first argument is the UTS function, the second argument is the
first argument to the UTS function. Who's on first.

Convert a couple of hardcoded values to constants. Make thr_getcontext()
return 0 when called the first time, and return 1 when resumed by
thr_setcontext().

Add preliminary sparc64 support to libpthread. This does not
yet work, but hopefully someone familiar with the sparc64
port can pick up the reins.

Submitted by: jake
With mods by: deischen