[glib] Add a note about requiring a new enough GConf

[Matthias Clasen <matthiasc src gnome org>]

commit 03a0f05058a1156edaab463da03f58b0f4988625
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Apr 21 12:37:38 2010 -0400

    Add a note about requiring a new enough GConf

 docs/reference/gio/migrating.xml |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gio/migrating.xml b/docs/reference/gio/migrating.xml
index be666f2..32910bc 100644
--- a/docs/reference/gio/migrating.xml
+++ b/docs/reference/gio/migrating.xml
@@ -570,6 +570,11 @@ some-odd-key1 = /apps/myapp/some_ODD-key1
         does not do any transformation of the values. And it does not handle
         complex GConf types other than lists of strings or integers.
       </para>
+      <para>
+        Don't forget to require GConf 2.31.1 or newer in your configure
+        script if you are making use of the GConf backend or the conversion
+        utility.
+      </para>
     </section>
   </chapter>