[PATCH] network block device is mostly known as "NBD"

People search maintainers for NBD and then decide it is not
maintained.

(akpm: ditto LVM.  And other things, but I forget what they were)

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