[mutter] Bump version to 3.28.0

[Florian Müllner <fmuellner src gnome org>]

commit 47856d97011d7a9bd13c1e1c638a6e43ebd9d9ac
Author: Florian Müllner <fmuellner gnome org>
Date:   Mon Mar 12 12:14:14 2018 +0100

    Bump version to 3.28.0
    
    Update NEWS.

 NEWS         | 11 +++++++++++
 configure.ac |  4 ++--
 2 files changed, 13 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index eec599ab4..47cf3acbc 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+3.28.0
+======
+* Fix xdg-foreign regression [Carlos; #63]
+
+Contributors:
+  Carlos Garnacho, Georges Basile Stavracas Neto
+
+Translators:
+  Marek Cernocky [cs], Ask Hjorth Larsen [da], Chao-Hsiung Liao [zh_TW],
+  Anders Jonsson [sv], Mart Raudsepp [et]
+
 3.27.92
 =======
 * Fix use of modifiers with multi-GPU systems [Louis-Francis; #18]
diff --git a/configure.ac b/configure.ac
index 3e5b1571e..1a625a435 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 AC_PREREQ(2.62)
 
 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [27])
-m4_define([mutter_micro_version], [92])
+m4_define([mutter_minor_version], [28])
+m4_define([mutter_micro_version], [0])
 
 m4_define([mutter_version],
           [mutter_major_version.mutter_minor_version.mutter_micro_version])