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

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

The last big commit: let usr.sbin/ use WARNS=6 by default.

Modify nfsd.c to add support for the experimental nfs server.
This includes the addition of a new flag "-4" that will force
use of the experimental server with nfsv4 support in it. This
commit also adds two new man pages to the repository that are
NFSv4 specific. One describes the file used by the server to
restart nfsv4 services safely. The other is a brief overview
of nfsv4 and its setup.

Reviewed by: dfr
Approved by: kib (mentor)

ANSI'fy nfsd(8) and some minor changes to make it WARNS=6 clean.

This commit does not affect the code generated, as proven by md5'ing
resulting binaries.

Bump WARNS accordingly.

Compiled on: sparc64, ia64, i386
Reviewed by: alfred (but blame me if anything goes wrong :-)

style.Makefile(5)

Default to WARNS=2.
Binary builds that cannot handle this must explicitly set WARNS=0.

Reviewed by: mike

Userland part of nfs client/server split and cleanup.

- Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.

Set the default manual section for sbin/ to 8.

Don't use libutil now that setproctitle() is in libc

Use libcrypto instead of libdes.

Removed definition of _NEW_VFSCONF. The new vfsconf interface is now
the default.

Merge from Lite2 (use new getvfsbyname() interface)

oops, do it right this time

Link with libutil for kerberos too

Make nfsd use setproctitle from libutil...

Old code is still #ifdef OLD_SETPROCTITLE for comparison with the old
code.

Add support for kerberised NQNFS.

Delete obsolete references to librpc.a.

Convert to our man installation style. Also fixed long-standing bug
in `fastboot'/`fasthalt' in which the interpreter would hang around
after `reboot' or `halt' is run, causing an irritating ``Killed'' message.

BSD 4.4 Lite sbin Sources

Note: XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.