[gvfs] Update NEWS for 1.39.4 release

[Ondrej Holy <oholy src gnome org>]

commit 8f840a1b51d1a6aa185652af57fd6052da1c661a
Author: Ondrej Holy <oholy redhat com>
Date:   Mon Jan 7 17:54:24 2019 +0100

    Update NEWS for 1.39.4 release

 NEWS | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/NEWS b/NEWS
index 6d65122a..2dc237e2 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,11 @@
+Major changes in 1.39.4
+=======================
+* keyring: Prefer the most recent item
+* afp: Try to find credentials even if user is not specified
+* dav: Try authenticate again even if 403 was returned
+* Several smaller bugfixes
+* Translation updates
+
 Major changes in 1.39.3
 =======================
 * udisks2: Improve handling of mounts which doesn't point into fs root