[mutter] configure: Require gsettings-desktop-schemas >= 3.15.4

[Rico Tzschichholz <ricotz src gnome org>]

commit 9d7af8a5fcb89930b0b51d74d97a565bd69d172f
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Jan 20 22:17:50 2015 +0100

    configure: Require gsettings-desktop-schemas >= 3.15.4
    
    Needed since 460e1fd7ca8631c802c4c1d9504c3a22449232df

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 840f921..5930b58 100644
--- a/configure.ac
+++ b/configure.ac
@@ -75,7 +75,7 @@ MUTTER_PC_MODULES="
    gio-unix-2.0 >= 2.35.1
    pango >= 1.2.0
    cairo >= 1.10.0
-   gsettings-desktop-schemas >= 3.7.3
+   gsettings-desktop-schemas >= 3.15.4
    $CLUTTER_PACKAGE >= 1.19.5
    cogl-1.0 >= 1.17.1
    upower-glib >= 0.99.0