[PATCH] Document checkstacks

From: Diego Calleja =?ISO-8859-15?Q?Garc=EDa?= <diegocg@teleline.es>

It'll be much better if the world can know about the existence of
checkstacks.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Makefile

@@ -904,6 +904,7 @@ help:
 	@echo  '  rpm		  - Build a kernel as an RPM package'
 	@echo  '  tags/TAGS	  - Generate tags file for editors'
 	@echo  '  cscope	  - Generate cscope index'
+	@echo  '  checkstack      - Generate a list of stack hogs'
 	@echo  ''
 	@echo  'Documentation targets:'
 	@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp