[gtk+] Update release notes

[Matthias Clasen <matthiasc src gnome org>]

commit 83d8f9b92931933e981893dff956bd87ab80a2b1
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Dec 1 10:03:33 2014 -0500

    Update release notes
    
    Mention that --enable-gtk2-dependency is gone.

 README.in                        |    3 +++
 docs/reference/gtk/building.sgml |   18 ------------------
 2 files changed, 3 insertions(+), 18 deletions(-)
---
diff --git a/README.in b/README.in
index 3276e3f..01dcd2a 100644
--- a/README.in
+++ b/README.in
@@ -79,6 +79,9 @@ Release notes for 3.16
 * GTK+ now includes an OpenGL rendering widget. To support GL on various
   platforms, GTK+ uses libepoxy.
 
+* GTK+ no longer uses gtk-update-icon-cache during its build. The
+  --enable-gtk2-dependency configure option has been removed.
+
 Release notes for 3.14
 ======================
 
diff --git a/docs/reference/gtk/building.sgml b/docs/reference/gtk/building.sgml
index 9c4b3ab..a1cd619 100644
--- a/docs/reference/gtk/building.sgml
+++ b/docs/reference/gtk/building.sgml
@@ -417,11 +417,6 @@ How to compile GTK+ itself
           </group>
           <sbr/>
           <group>
-            <arg choice="plain">--enable-gtk2-dependency</arg>
-            <arg choice="plain">--disable-gtk2-dependency</arg>
-          </group>
-          <sbr/>
-          <group>
             <arg choice="plain">--enable-installed-tests</arg>
             <arg choice="plain">--disable-installed-tests</arg>
           </group>
@@ -638,19 +633,6 @@ How to compile GTK+ itself
       </formalpara>
 
       <formalpara>
-        <title><systemitem>--enable-gtk2-dependency</systemitem> or
-           <systemitem>--disable-gtk2-dependency</systemitem></title>
-
-        <para>
-          Whether to rely on an exiting gtk-update-icon-cache utility
-          instead of building our own. Distributions which are shipping
-          both GTK+ 2.x and GTK+ 3 may want to use this option to
-          avoid file conflicts between these packages.
-          The default is to build gtk-update-icon-cache.
-        </para>
-      </formalpara>
-
-      <formalpara>
         <title><systemitem>--enable-installed-tests</systemitem> or
            <systemitem>--disable-installed-tests</systemitem></title>