[PATCH] respect srctree/objtree in Documentation/DocBook/Makefile

The KERNELDOC and DOCPROC variables are relative to the
$(srctree)/$(objtree) and expect to be run only from there ...  attached
patch adds proper srctree/objtree prefixes to both variables.

Acked-by: "Randy.Dunlap" <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Documentation/DocBook/Makefile

@@ -53,8 +53,8 @@ installmandocs: mandocs
 
 ###
 #External programs used
-KERNELDOC = scripts/kernel-doc
-DOCPROC   = scripts/basic/docproc
+KERNELDOC = $(srctree)/scripts/kernel-doc
+DOCPROC   = $(objtree)/scripts/basic/docproc
 
 XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl
 #XMLTOFLAGS += --skip-validation