[PATCH] Documentation: how to apply patches for various trees

Add a new document describing the major kernel trees and how to apply their
patches.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Documentation/00-INDEX

@@ -46,6 +46,8 @@ SubmittingPatches
 	- procedure to get a source patch included into the kernel tree.
 VGA-softcursor.txt
 	- how to change your VGA cursor from a blinking underscore.
+applying-patches.txt
+	- description of various trees and how to apply their patches.
 arm/
 	- directory with info about Linux on the ARM architecture.
 basic_profiling.txt