Fix build for S != B

This patch is specific to version 1.4.x
Upstream-Status: Submitted @ https://github.com/clutter-project/mx/issues/81
Signed-off-by: Tomas Frydrych <tomas@sleepfive.com>
--
Index: git/docs/reference/libmx-gtk/Makefile.am
===================================================================
--- git.orig/docs/reference/libmx-gtk/Makefile.am	2013-05-08 15:07:02.027154788 +0100
+++ git/docs/reference/libmx-gtk/Makefile.am	2013-05-08 15:14:33.684318650 +0100
@@ -1,3 +1,6 @@
+EXTRA_DIST=
+CLEANFILES=
+
 ## Process this file with automake to produce Makefile.in
 
 # We require automake 1.6 at least.
@@ -77,7 +80,7 @@
 GTKDOC_LIBS=$(MX_LIBS) $(top_builddir)/mx-gtk/libmx-gtk-$(MX_API_VERSION).la
 
 # This includes the standard gtk-doc make rules, copied by gtkdocize.
-include $(top_srcdir)/gtk-doc.make
+include $(top_builddir)/gtk-doc.make
 
 # Other files to distribute
 EXTRA_DIST += version.xml.in
Index: git/docs/reference/libmx/Makefile.am
===================================================================
--- git.orig/docs/reference/libmx/Makefile.am	2013-05-08 15:07:02.027154788 +0100
+++ git/docs/reference/libmx/Makefile.am	2013-05-08 15:14:24.456378135 +0100
@@ -1,3 +1,6 @@
+EXTRA_DIST=
+CLEANFILES=
+
 ## Process this file with automake to produce Makefile.in
 
 # We require automake 1.6 at least.
@@ -106,7 +109,7 @@
 GTKDOC_LIBS=$(MX_LIBS) $(top_builddir)/mx/libmx-$(MX_API_VERSION).la
 
 # This includes the standard gtk-doc make rules, copied by gtkdocize.
-include $(top_srcdir)/gtk-doc.make
+include $(top_builddir)/gtk-doc.make
 
 # Other files to distribute
 EXTRA_DIST += version.xml.in
