- 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

Add an END macro to ARM. This is mostly used to tell gas where the bounds
of the functions are when creating the EABI unwind tables.

Final whitespace trim.

The NetBSD Foundation has granted permission to remove clauses 3 and 4.

Obtained from: NetBSD

Back when I committed the arm port, I've been asked to move
memcpy/memset/memcmp and friends from libkern/arm to arm/arm/support.S, and so
I did, but in the process, I didn't add the appropriate copyrights.
This is a major oversight from me, and I apology to the NetBSD people for it.

MFC After: 1 day

Do not use __XSCALE__ to detect if pld/strd/ldrd is available, use
_ARM_ARCH_5E instead.

MFC After: 3 days

Erm we can't change the value of arm_memcpy if we're running from flash.
Instead, make memcpy() check if we're running from flash, and avoid
using arm_memcpy if we're doing so.

Unbreak for !__XSCALE__.

Add a new API to let platform-specific ports provide functions for big
copy/zeroing.

We have an asm version of bcmp(), so we could use it as well.

Unlike NetBSD's bcopy(), our bcopy allows the two strings to overlap, even in
kernel. So bring in the userland version, instead of just calling memcpy.

Use the RET macro.

Implement casuptr.

Remove unused macroes.
Add user, btrap, etrap, bintr and eintrt in the GPROF case.

Nuke disable_intr() and enable_intr(), as it already exists elsewhere.

Implement bcopy, memcpy and memcmp in support.S.

Implement bzero et memset in support.S

Import FreeBSD/arm kernel bits.
It only supports sa1110 (on simics) right now, but xscale support should come
soon.
Some of the initial work has been provided by :
Stephane Potvin <sepotvin at videotron.ca>
Most of this comes from NetBSD.