Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

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

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Annotate arm userspace assembler sources stating their tolerance to
the non-executable stack.

Reviewed by: andrew
Sponsored by: The FreeBSD Foundation

Add the needed if-then instructions to build as Thumb-2.

Switch to the ARM unified assembly language as the clang integrated as only
supports it. Binutils supports it when the ".syntax unified" directive
is set.

Sponsored by: ABT Systems Ltd

In ARM asm code, ensure that every ENTRY(foo) has a matching END(foo).
The EABI unwind info requires a .fnend for every .fnstart, and newer
binutils will complain about seeing two .fnstart in a row. This change
allows newer tools to compile our code.

Reported by: bapt
Reviewed by: imp

MFKernel: do not use __XSCALE__ to detect if clz/pld/ldrd/strd are
available, use _ARM_ARCH_5/_ARM_ARCH_5E instead.

MFC After: 3 days

Use the RET macro.
For setjmp() and longjmp(), put the signal mask where it's supposed to be,
instead of in the space reserved for fp regs.

Import the FreeBSD/arm libc bits.

Obtained from: NetBSD