gnu: xf86-input-synaptics: Update to 1.8.1.

* gnu/packages/patches/xf86-input-synaptics-glibc-2.20.patch: Remove.
* gnu-system.am (dist_patch_DATA): Remove it.
* gnu/packages/xorg.scm (xf86-input-synaptics): Update to 1.8.1.
  Remove patch.  Add libevdev to inputs.

gnu-system.am

@@ -458,7 +458,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/vpnc-script.patch			\
   gnu/packages/patches/w3m-fix-compile.patch			\
   gnu/packages/patches/wmctrl-64-fix.patch			\
-  gnu/packages/patches/xf86-input-synaptics-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-input-synaptics-glibc-2.20.patch

@@ -1,63 +0,0 @@
-Allow builds with libc 2.20.
-Patch from <https://raw.githubusercontent.com/openembedded/oe-core/master/meta/recipes-graphics/xorg-driver/xf86-input-synaptics/always_include_xorg_server.h.patch>.
-
-From 96e60a4ea242d2decf109835981ae186cc36f642 Mon Sep 17 00:00:00 2001
-From: Peter Hutterer <peter.hutterer@who-t.net>
-Date: Fri, 29 Aug 2014 07:57:41 +1000
-Subject: Include xorg-server.h to fix build errors on newest glibc
-
-In file included from /usr/include/string.h:634:0,
-                 from /usr/include/xorg/os.h:53,
-                 from /usr/include/xorg/misc.h:115,
-                 from /usr/include/xorg/xf86str.h:37,
-                 from /usr/include/xorg/xf86Xinput.h:54,
-                 from synproto.h:36,
-                 from synproto.c:24:
-/usr/include/xorg/os.h:579:1: error: expected identifier or '(' before '__extension__'
- strndup(const char *str, size_t n);
-
-See http://lists.freedesktop.org/archives/xorg-devel/2014-July/043070.html
-
-Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
-
-Status: Backport
-
-Index: xf86-input-synaptics-1.8.0/src/eventcomm.h
-===================================================================
---- xf86-input-synaptics-1.8.0.orig/src/eventcomm.h	2014-08-28 18:40:28.628070587 -0700
-+++ xf86-input-synaptics-1.8.0/src/eventcomm.h	2014-08-28 18:40:28.620070587 -0700
-@@ -27,6 +27,8 @@
- #ifndef _EVENTCOMM_H_
- #define _EVENTCOMM_H_
- 
-+#include <xorg-server.h>
-+
- #include <linux/input.h>
- #include <linux/version.h>
- #include <xf86Xinput.h>
-Index: xf86-input-synaptics-1.8.0/src/ps2comm.h
-===================================================================
---- xf86-input-synaptics-1.8.0.orig/src/ps2comm.h	2014-08-28 18:40:28.628070587 -0700
-+++ xf86-input-synaptics-1.8.0/src/ps2comm.h	2014-08-28 18:40:28.620070587 -0700
-@@ -22,6 +22,8 @@
- #ifndef _PS2COMM_H_
- #define _PS2COMM_H_
- 
-+#include <xorg-server.h>
-+
- #include <unistd.h>
- #include <sys/ioctl.h>
- #include "xf86_OSproc.h"
-Index: xf86-input-synaptics-1.8.0/src/synproto.h
-===================================================================
---- xf86-input-synaptics-1.8.0.orig/src/synproto.h	2014-08-28 18:40:28.628070587 -0700
-+++ xf86-input-synaptics-1.8.0/src/synproto.h	2014-08-28 18:40:28.624070587 -0700
-@@ -31,6 +31,8 @@
- #include "config.h"
- #endif
- 
-+#include <xorg-server.h>
-+
- #include <unistd.h>
- #include <sys/ioctl.h>
- #include <xf86Xinput.h>

gnu/packages/xorg.scm

@@ -2301,22 +2301,21 @@ (define-public xf86-input-mouse
 (define-public xf86-input-synaptics
   (package
     (name "xf86-input-synaptics")
-    (version "1.6.1")
+    (version "1.8.1")
     (source
       (origin
         (method url-fetch)
         (uri (string-append
-               "mirror://xorg/X11R7.7/src/everything/xf86-input-synaptics-"
+               "mirror://xorg/individual/driver/xf86-input-synaptics-"
                version
                ".tar.bz2"))
         (sha256
           (base32
-            "0g5b1s6q1dg38l8y47cwg7cs5nivwj0agmp71g273ws0lfg4bc8s"))
-        (patches
-         (list (search-patch "xf86-input-synaptics-glibc-2.20.patch")))))
+            "16phzd7yhl4wns957c35qz2nahmjvnlx05jf975s524qkvrdlkyp"))))
     (build-system gnu-build-system)
     (inputs `(("libx11" ,libx11)
               ("libxi" ,libxi)
+              ("libevdev" ,libevdev)
               ("mtdev" ,mtdev)
               ("xorg-server" ,xorg-server)))
     (native-inputs `(("pkg-config" ,pkg-config)))