actual implementation and avoid confusion.

Remove the old backward-compatible quota interface.

The patch also contains a renaming of functions vfs_{get|set}_info() to
vfs_{get|set}_dqinfo() and minor compilation fix needed for 2.5.18
(include <linux/namei.h>).

This patch implements configurable backward compatible quota interface.
Maybe this isn't needed in 2.5 but as some people want to use patches
in 2.4 where it's necessary I have implemented it.

This is probably the largest chunk in quota patches. It removes old quotactl interface
and implements new one. New interface should not need arch specific conversions so they
are removed. All quota interface stuff is moved to quota.c so we can
easily separate things which should be compiled even if quota is disabled (mainly
because XFS needs some interface even if standard VFS quota is disabled).
Callbacks to filesystem on quota_on() and quota_off() are implemented (needed by Ext3),
quota operations callbacks are now set in super.c on superblock initialization and
not on quota_on(). This way it starts to make sense to have callbacks on alloc_space(),
alloc_inode() etc. as filesystem can override them on read_super(). This will be used
later for implementing journalled quota.

1) Update for schedule_tail and switch_to arg changes.
2) Update for PTE highmem.
3) Add random ioctls to ioctl32 translations.
4) Kill migration IPI.
5) Fixup scheduler bitmap function and move into bitops.h

	* stat() variants on ppc64 converted to use of vfs_stat() and its ilk.
	* missing LFS checks added.

stat(2) variants in arch/* that used to copy inode fields manually
switched to vfs_*stat() and partially cleaned up

  - Stephen Rothwell: APM idle time handling fixes, docbook update, cleanup
  - Jeff Garzik: network driver updates
  - Greg KH: USB updates
  - Al Viro: UFS update, binfmt_misc rewrite.
  - Andreas Dilger: /dev/random fixes
  - David Miller: network/sparc updates

  - me/Al Viro: fix bdget() oops with block device modules that don't
  clean up after they exit
  - Alan Cox: continued merging (drivers, license tags)
  - David Miller: sparc update, network fixes
  - Christoph Hellwig: work around broken drivers that add a gendisk more
  than once
  - Jakub Jelinek: handle more ELF loading special cases
  - Trond Myklebust: NFS client and lockd reclaimer cleanups/fixes
  - Greg KH: USB updates
  - Mikael Pettersson: sparate out local APIC / IO-APIC config options

  - David Miller: sparc updates, FAT fs fixes, btaudio build fix
  - David Gibson: Orinoco driver update
  - Kevin Fleming: more disks the HPT controller doesn't like
  - David Miller: "min()/max()" cleanups. Understands signs and sizes.
  - Ben LaHaise: make vma merging more generous, help Mozilla /proc/<>/maps
  - Jens Axboe: CD updates
  - Trond Myklebust: save away NFS credentials in inode, so that mmap can
  writeout.
  - Mark Hemment: HIGHMEM ops cleanups
  - Jes Sorensen: use "unsigned long" for flags in various drivers

  - Rui Sousa: emu10k1 module fixes, remove joystick part.
  - Alan Cox: driver merges
  - Andrea Arkangeli: alpha updates
  - David Woodhouse: up_and_exit -> complete_and_exit
  - David Miller: sparc and network update
  - Andrew Morton: update 3c59x driver
  - Neil Brown: NFS export VFAT, knfsd cleanups, raid fixes
  - Ben Collins: ieee1394 updates
  - Paul Mackerras: PPC update
  - me: make sure we don't lose position bits in "filldir()"

  - Johannes Erdfelt: USB update (bluetooth and serial)
  - Andrew Grover: ACPI update for _real_ this time.
  - Neil Brown: md update
  - Keith Owens: kbuild script fix, do_softirq versioning fix
  - David Miller: sparc and portability updates

  - David Miller: sparc rw semaphores moved over
  - Alan Cox: yet more resyncs
  - NIIBE Yutaka: Super-H driver update
  - David Howells: more rw-sem cleanups, updates
  - USB updates
  - Al Viro: filesystem init cleanup

  - Hui-Fen Hsu: sis900 driver update
  - NIIBE Yutaka: Super-H update
  - Alan Cox: more resyncs (ARM down, but more to go)
  - David Miller: network zerocopy, Sparc sync, qlogic,FC fix, etc.
  - David Miller/me: get rid of various drivers hacks to do mmap
  alignment behind the back of the VM layer. Create a real
  protocol for it.

  - Paul Mackerras: PPC update for thread-safe page table handling
  - Ingo Molnar: x86 PAE update for thread-safe page table handling
  - Jeff Garzik: network driver updates, i810 rng driver, and
  "alloc_etherdev()" network driver insert race condition fix.
  - David Miller: UltraSparcIII update, network locking fixes
  - Al Viro: fix fs counts on mount failure

  - Rik van Riel and others: mm rw-semaphore (ps/top ok when swapping)
  - IDE: 256 sectors at a time is legal, but apparently confuses some
  drives. Max out at 255 sectors instead.
  - Petko Manolov: USB pegasus driver update
  - make the boottime memory map printout at least almost readable.
  - USB driver updates
  - pte_alloc()/pmd_alloc() need page_table_lock.

  - sync up more with Alan
  - Urban Widmark: smbfs and HIGHMEM fix
  - Chris Mason: reiserfs tail unpacking fix ("null bytes in reiserfs files")
  - Adan Richter: new cpia usb ID
  - Hugh Dickins: misc small sysv ipc fixes
  - Andries Brouwer: remove overly restrictive sector size check for
  SCSI cd-roms

  - Jens: better ordering of requests when unable to merge
  - Neil Brown: make md work as a module again (we cannot autodetect
  in modules, not enough background information)
  - Neil Brown: raid5 SMP locking cleanups
  - Neil Brown: nfsd: handle Irix NFS clients named pipe behavior and
  dentry leak fix
  - maestro3 shutdown fix
  - fix dcache hash calculation that could cause bad hashes under certain
  circumstances (Dean Gaudet)
  - David Miller: networking and sparc updates
  - Jeff Garzik: include file cleanups
  - Andy Grover: ACPI update
  - Coda-fs error return fixes
  - rth: alpha Jensen update

  - Trond Myklebust: NFS/RPC client SMP fixes
  - rth: alpha pyxis and cabriolet fixes
  - remove broken sys_wait4() declarations
  - disable radeon debugging code
  - VIA IDE driver should not enable autodma unless asked for
  - Andrey Savochkin: eepro100 update. Should fix the resource timing problems.
  - Jeff Garzik: via82cxxx_audio update
  - YMF7xx PCI audio update: get rid of old broken driver, make new
  driver handle legacy control too.
  - fix missed wakeup on block device request list
  - hpt366 controller doesn't play nice with some IBM harddisks
  - remove inode pages from the page cache only after having removed them
  from the page tables.
  - shared memory out-of-swap writepage() fixup (no more magic return)