[PATCH] nfs: Update Documentation/nfsroot.txt to include dhcp, syslinux and isolinux

* Document the ip command a little differently to make the
  interaction between defaults and autoconfiguration a little clearer
  (I hope)

* Update autoconfiguration the current set of options, including DHCP

* Update the boot methods to add syslinux and isolinux, and remove
  dd of=/dev/fd0 which is no longer supported by linux

* Add a referance to initramfs along side initrd.
  Should the latter and its document be removed some time soon?

* Various cleanups to put the text consistently into the thrid person

* Reformated a bit to fit into 80 columns a bit more nicely

* Should the bootloaders documentation be removed or split
  into a separate documentation, it seems somewhat out of scope
Signed-off-by: Horms <horms@verge.net.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>