Apply the following patch submitted by Evgeniy Ivanov:
http://mail-index.NetBSD.org/tech-kern/2011/12/15/msg012226.html
http://mail-index.NetBSD.org/tech-kern/2011/12/17/msg012229.html

- add 'ls' o

Apply the following patch submitted by Evgeniy Ivanov:
http://mail-index.NetBSD.org/tech-kern/2011/12/15/msg012226.html
http://mail-index.NetBSD.org/tech-kern/2011/12/17/msg012229.html

- add 'ls' op to struct fs_ops to support ls command on each fs,
enabled by -DLIBSA_ENABLE_LS_OP and SAMISCMAKEFLAGS+="SA_ENABLE_LS_OP=yes"
in libsa
- split sys/lib/libsa/ufs_ls.c into UFS specific part and MI part (ls.c)
that opens the target fs and calls fs-depedent XXX_ls() functions
- add a ls op for ext2fs
(all other fs than ufs and ext2fs don't have actual ls ops yet)
- replace existing MD ufs_ls() calls with this new MI ls()

The original patch was written for i386 and ext2fs.
zaurus zboot has been tested by nonaka@.
ews4800mips and x68k loaders have been tested by me (with several fixes).
landisk might be okay since it was almost copied from i386.

XXX1: "ls" op in fs_ops looks a bit inconsistent, but we will be able to
replace it with real fs ops like readdir if it's really worth
XXX2: someone might have to check sys/arch/ia64/stand/efi/libefi/efifs_ls.c

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Add an optional MD calling convention flag for use in libsa when space
optimisation is critical. Use this on i386 to switch to register passing
calling convention for the file system entry points and

Add an optional MD calling convention flag for use in libsa when space
optimisation is critical. Use this on i386 to switch to register passing
calling convention for the file system entry points and most assembler
call backs that have to preserve at least 3 registers.

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ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

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Remove all the __P() from sys (excluding sys/dist)
Diff checked with grep and MK1 eyeball.
i386 and amd64 GENERIC and sys still build.

Cut-and-paste strikes again. Set fsmod here too.

remove nqnfs from comments. from Arnaud Lacombe.
(no functional changes.)

free -> dealloc
unsigned -> size_t for alloc/dealloc

merge ktrace-lwp.

#include <lib/libsa/stand.h> rather than <stand.h> or "stand.h"

Remove trailing spaces.

Fix signed/unsigned warnings.

Further fallout from making 'path' arg to 'ufs_open' 'constchar *'.
There may be fallout in other builds....

catch up with constification in sys/lib/libsa/nfs.c

sync with mi libsa/nfs.c (with the intent to replace it eventually):
-kill "register" attributes
-obey "LIBSA_NO_TWIDDLE"
-ignore leading "/" also in the NFS_NOSYMLINK case

add prototypes for local functions

b*()->mem*()

-take over debugging printf format fixes from sys/lib/libsa/nfs.c rev.1.23
-make error reporting for mount working as in sys/lib/libsa/nfs.c

Use a private NFS layer. This allows for more optimization than the
separated "nfswrapper.c"/"nfs.c".
This nfs.c differs from the stand/lib/libsa one in that it does not
have a separate mount() funct

Use a private NFS layer. This allows for more optimization than the
separated "nfswrapper.c"/"nfs.c".
This nfs.c differs from the stand/lib/libsa one in that it does not
have a separate mount() function - the mount is done in open().

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