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

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

Revert..
not needed now

When non kernel programs try to define _KERNEL
it always ends in tears.

this is a temporary hack..
we'll remove it in a short while. I'll set teh MFC to remind me

MFC after: 1 week

Adjust the system endian and a.out headers to be more MI and cross-building
friendly. Use the systems headers rather than local versions.

Reviewed by: ru

Convert kgzip(8) to be an i386 cross-tool. This is needed for
cross-releasing i386 on different architectures. This version
provides an i386 version of <a.out.h>, and handles endianness.

Tested on: alpha, sparc64

Get rid of the randomizing factor.

Make this work on non-i386 as well. (Needed for cross-releases.)

Fix the type of the NULL arg to execl()

Idea from: Theo de Raadt <deraadt@openbsd.org>

* include/elf.h has been repo copied to include/elf-hints.h, and it no
longer includes machine/elf.h.
* consumers of elf.h now use the minimalist elf header possible.

This change is motivated by Binutils 2.11.0 and too much clashing over
our base elf headers and the Binutils elf headers.

Add support for creating a.out output files in addition to ELF.
This allows booting from compressed binaries using older bootstraps.

Thanks to: dwmalone

Don't call err() without a format string.

$Id$ -> $FreeBSD$

This commit was generated by cvs2svn to compensate for changes in r48905,
which included commits to RCS files with non-trunk default branches.

kgzip is a kzip(8) replacement able to compress and link bootable
32-bit binaries in both ELF and a.out format.

Development sponsored by Global Technology Associates, Inc.

Reviewed/tested by: abial