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)

GC non-FreeBSD code that didn't work anyways.

- sys/n[tw]fs moved to sys/fs/n[tw]fs
- /usr/include/n[tw]fs moved to /usr/include/fs/n[tw]fs

Remove unneeded #include <sys/proc.h> lines.

Remove unneeded #include <sys/kernel.h>

Remove ~25 unneeded #include <sys/conf.h>
Remove ~60 unneeded #include <sys/malloc.h>

Remove unneeded <sys/buf.h> includes.

Due to some interesting cpp tricks in lockmgr, the LINT kernel shrinks
by 924 bytes.

Merged NetBSD version, as they have done improvements:
1. ntfs_read*attr*() functions now accept
uio structure to eliminate one data copying.
2. found and removed deadlock caused
by 6 concurent ls -lR.
3. started implementation of nromal
Unicode<->unix recodeing.

Obtained from: NetBSD

$Id$ -> $FreeBSD$

Decommision miscfs/specfs/specdev.h. Most of it goes into <sys/conf.h>,
a few lines into <sys/vnode.h>.

Add a few fields to struct specinfo, paving the way for the fun part.

Driver is now ported to NetBSD.

Submitted by: Christos Zoulas <christos@zoulas.com>

Removed annoying messaged during boot,added some check
before mounting (should help to do not mount extended partitions:-).
Fixed problem with hanging while unmounting busy fs.

And (the most important) added some locks to prevent
simulaneous access to kernel structures!

Added limited write ability. Now we can use some kind
of files for swap holders. See mount_ntfs..8 for details.

First version.
Reviewed by: David O'Brien <obrien@NUXI.com>