- 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

Remove incorrect attribution.

Approved by: re (kib)
Pointed out by: brueffer
Pointy hat to: gnn

Make both stpcpy and strcpy be assembly language implementations
on amd64.

Submitted by: Guillaume Morin (guillaume at morinfr.org)
Reviewed by: kib, jhb
Approved by: re (bz)
MFC after: 1 month

Remove duplicate .note.GNU-stack section declaration. bcopy already
made the neccessary provisions.

Reported by: arundel

Add section .note.GNU-stack for assembly files used by 386 and amd64.

We've been lax about matching END() macros in asm code for some time. This
is used to set the ELF size attribute for functions. It isn't normally
critical but some things can make use of it (gdb for stack traces).
Valgrind needs it so I'm adding it in. The problem is present on all
branches and on both i386 and amd64.

Optimize the instruction alignment.

Add a machine-specific, optimized implementation of strcat.

PR: 73111
Submitted by: Ville-Pertti Keinonen <will@iki.fi> (taken from NetBSD)
MFC after: 3 weeks

Eliminate a conditional branch and as a side-effect eliminate a branch to
a return instruction. (The latter is discouraged by the Opteron
optimization manual because it disables branch prediction for the return
instruction.)

Reviewed by: bde

Add a machine-specific, optimized implementation of strcpy.

PR: 73111
Submitted by: Ville-Pertti Keinonen <will@iki.fi> (taken from NetBSD)
MFC after: 3 weeks

Add a machine-specific, optimized implementation of strcmp.

PR: 73111
Submitted by: Ville-Pertti Keinonen <will@iki.fi> (taken from NetBSD)
MFC after: 3 weeks

Add machine-specific, optimized implementations of bcmp and memcmp.

PR: 73111
Submitted by: Ville-Pertti Keinonen <will@iki.fi> (taken from NetBSD)
MFC after: 3 weeks

Eliminate unneeded instructions that are a vestige of mechanical
translation from i386.

Eliminate an unneeded instruction that is a vestige of mechanical
translation from i386.

Add machine-specific, optimized implementations of bcopy, bzero, memcpy,
memmove, and memset.

PR: 73111
Submitted by: Ville-Pertti Keinonen <will@iki.fi> (taken from NetBSD)
MFC after: 3 weeks