gtk3: version bump for libreoffice

desktop/toolkit/gtk/gtk3/pspec.xml

@@ -11,7 +11,7 @@
         <License>LGPLv2.1</License>
         <Summary>The GIMP Toolkit version 3</Summary>
         <Description>GTK+ is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off projects to complete application suites.</Description>
-        <Archive sha1sum="a8516710bd1f5551244a66f7f7348a0605a6326b" type="tarxz">mirrors://gnome/gtk+/3.16/gtk+-3.16.4.tar.xz</Archive>
+        <Archive sha1sum="e7dd8a397031316c57b845bc76744ed5886385b1" type="tarxz">mirrors://gnome/gtk+/3.18/gtk+-3.18.6.tar.xz</Archive>
         <BuildDependencies>
             <Dependency>atk-devel</Dependency>
             <Dependency>cups-devel</Dependency>
@@ -203,7 +203,14 @@
         </Files>
     </Package-->
 
-    <History>
+     <History>
+        <Update release="12">
+            <Date>2016-01-25</Date>
+            <Version>3.18.6</Version>
+            <Comment>Version bump.</Comment>
+            <Name>Osman Erkan</Name>
+            <Email>osman.erkan@pisilinux.org</Email>
+        </Update>
         <Update release="11">
             <Date>2015-07-07</Date>
             <Version>3.16.4</Version>