gnu: xf86-video-mach64: Update to 6.9.4.

* gnu/packages/patches/xf86-video-mach64-glibc-2.20.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/xorg.scm (xf86-video-mach64): Update to 6.9.4.  Add patch.

gnu-system.am

@@ -465,6 +465,7 @@ dist_patch_DATA =						\
   gnu/packages/patches/xf86-video-i128-remove-mibstore.patch	\
   gnu/packages/patches/xf86-video-intel-compat-api.patch	\
   gnu/packages/patches/xf86-video-intel-glibc-2.20.patch	\
+  gnu/packages/patches/xf86-video-mach64-glibc-2.20.patch	\
   gnu/packages/patches/xf86-video-openchrome-includes.patch	\
   gnu/packages/patches/xfce4-panel-plugins.patch		\
   gnu/packages/patches/xmodmap-asprintf.patch

gnu/packages/patches/xf86-video-mach64-glibc-2.20.patch

@@ -0,0 +1,17 @@
+Fix test compilation with exa.h in configure when using glibc 2.20.
+Inspired by a patch by Peter Hutterer <peter.hutterer@who-t.net>.
+See <https://raw.githubusercontent.com/openembedded/oe-core/master/meta/recipes-graphics/xorg-driver/xf86-input-synaptics/always_include_xorg_server.h.patch>.
+
+--- xf86-video-mach64-6.9.4/configure.~1~	2012-12-20 01:16:10.000000000 -0500
++++ xf86-video-mach64-6.9.4/configure	2014-12-19 02:48:18.040097554 -0500
+@@ -18370,7 +18370,9 @@
+ 
+         SAVE_CPPFLAGS="$CPPFLAGS"
+         CPPFLAGS="$CPPFLAGS $XORG_CFLAGS"
+-        ac_fn_c_check_header_mongrel "$LINENO" "exa.h" "ac_cv_header_exa_h" "$ac_includes_default"
++        ac_fn_c_check_header_mongrel "$LINENO" "exa.h" "ac_cv_header_exa_h" "$ac_includes_default
++#include <xorg-server.h>
++"
+ if test "x$ac_cv_header_exa_h" = xyes; then :
+   have_exa_h="yes"
+ else

gnu/packages/xorg.scm

@@ -2614,17 +2614,18 @@ devices, thus making direct access unnecessary.")
 (define-public xf86-video-mach64
   (package
     (name "xf86-video-mach64")
-    (version "6.9.1")
+    (version "6.9.4")
     (source
       (origin
         (method url-fetch)
         (uri (string-append
-               "mirror://xorg/X11R7.7/src/everything/xf86-video-mach64-"
+               "mirror://xorg/individual/driver/xf86-video-mach64-"
                version
                ".tar.bz2"))
         (sha256
           (base32
-            "0kl3kvpc2ny48z89313i9fi4cxzwb2pllvxcr9j5ly680ygx8slz"))))
+           "0pl582vnc6hdxqhf5c0qdyanjqxb4crnhqlmxxml5a60syw0iwcp"))
+        (patches (list (search-patch "xf86-video-mach64-glibc-2.20.patch")))))
     (build-system gnu-build-system)
     (inputs `(("mesa" ,mesa)
               ("xf86driproto" ,xf86driproto)