[gvfs] Update NEWS for 1.21.3 release

[Ondrej Holy <oholy src gnome org>]

commit f1b4c824c6aac50d7915e9fb3a5e3816800e3561
Author: Ondrej Holy <oholy redhat com>
Date:   Mon Jun 23 09:44:43 2014 +0200

    Update NEWS for 1.21.3 release

 NEWS |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 88fa631..71fcce3 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+Major changes in 1.21.3
+=======================
+* afc: Implement standard::allocated-size
+* smb: Implement standard::allocated-size
+* afp: Report number of bytes copied
+* afc: Work-around mounts not disappearing when disconnecting device
+* afc: Add version detection for iOS 6, 7 and 8
+* metadata: Fix misaligned accesses to 64bit data
+* Several smaller bugfixes
+* Translation updates
+
 Major changes in 1.21.2
 =======================
 * gvfs-mount: Handle the ask-question signal