[PATCH] Select cpio_list or source directory for initramfs image

[PATCH] Select cpio_list or source directory for initramfs image

Attached is a patch that adds CONFIG_INITRAMFS_SOURCE, enabling you to
either specify a file as cpio_list, or a directory to generate a list from.

It depreciate the INITRAMFS_LIST environment variable introduced not long
ago.

There are some issues (suggestions/patches welcome) that I am not
sure about:
1) I put the menu entry under block devices, but I am not sure if
   this is the correct location?
2) There might be a better (or more correct) way to do this with
   kbuild?
3) Variable names and especially help text needs some love.
4) I am not sure if I am duplicating work in progress?

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>