[glib] Mention the glib-compile-schemas change in NEWS

[Matthias Clasen <matthiasc src gnome org>]

commit cc287a21cf15350c6edcb029ee83cbf20259c48a
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Apr 7 16:20:00 2015 -0400

    Mention the glib-compile-schemas change in NEWS

 NEWS |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 46dbea9..0a613e0 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,13 @@
+Overview of changes in GLib 2.45.x
+==================================
+
+* The GSettings schema compiler, glib-compile-schemas has been changed
+  to reject schema xml that has duplicate <summary> or <description>
+  elements. Such elements typically occur when translations are merged
+  into the schema, with xml:lang attributes. This is not the correct
+  way to translate schemas. Instead keep the translations in the .mo
+  file and set the gettext-domain attribute on the <schemalist> element.
+
 Overview of changes in GLib 2.43.92
 ===================================