Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Boris Popov has granted permission to remove the advertising clause
from lib/libncp. Make it so. Also, renumbered clauses.

Prefer C99's __func__ over GCC's __FUNCTION__.

Distinguish cases when ncp module not loaded and when module have old
interface.

Fix for 64 bit platforms. sysctl's length args are pointers to
size_t, not int. This could be fatal where size_t is long.

Reviewed by: bp

No need to have ifdef < FreeBSD 4.0-current in here. Remove it to
avoid false positive while searching for __FreeBSD_version abuse.

Use a character device and ioctl() for communication between libncp
and the kernel instead of adding more syscalls at runtime. As a bonus,
you can now restrict access to the kernel NCP interface with chmod.

Do not use __progname directly (except in [gs]etprogname(3)).
Also, make an internal _getprogname() that is used only inside
libc. For libc, getprogname(3) is a weak symbol in case a
function of the same name is defined in userland.

Add __FBSDID()s to libncp

Mark some functions as __printflike() and/or taking const char * arguments
instead of char *.

MFC after: 2 weeks

Remove duplicated extern.

Submitted by: Nathan Ahlstrom <nrahlstr@winternet.com>

Handle SAP responces in a more correct way. Allow connection number
greater than 255 in the broadcast messages.

Initial import of ncp library sources.

Reviewed by: jdp, mdodd