[gdk-pixbuf] Update NEWS for 2.21.7

[Matthias Clasen <matthiasc src gnome org>]

commit b11340a7c468f78bebdfa07d900985a893ebdb5c
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Sep 10 09:02:16 2010 -0400

    Update NEWS for 2.21.7

 NEWS |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 83710fa..9914972 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,20 @@
+2.21.7
+======
+
+* Fix linking when libpng loader is builtin (#624712)
+
+* Improve the pixbuf loader docs (#604284)
+
+* Fix compat issues wrt to single includes (#622940)
+
+* Win32: Link directly to GDI+
+
+* Require gobject-introspection 0.9.5
+
+* Translation updates:
+  British English
+  Italian
+
 2.21.6
 ======