gnu: gajim: Update to 0.16.5 [fixes CVE-2015-8688].

* gnu/packages/messaging.scm (gajim): Update to 0.16.5.
  [arguments]: Disable tests.

gnu/packages/messaging.scm

 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
+;;; Copyright © 2014, 2015, 2016 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2014 Julien Lepiller <julien@lepiller.eu>
 ;;; Copyright © 2015 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
 ;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
@@ -425,7 +425,7 @@ (define-public python2-nbxmpp
 (define-public gajim
   (package
     (name "gajim")
-    (version "0.16.4")
+    (version "0.16.5")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://gajim.org/downloads/"
@@ -433,10 +433,17 @@ (define-public gajim
                                   "/gajim-" version ".tar.bz2"))
               (sha256
                (base32
-                "0zyfs7q1qg8iqszr8l1gb18gqla6zrrfsgpmbxblpi9maqxas5i1"))))
+                "14fhcqnkqygh91132dnf1idayj4r3iqbwb44sd3mxv20n6ribh55"))))
     (build-system gnu-build-system)
     (arguments
-     `(#:phases
+     `(;; The only check done by gajim-0.16.x is to check that the
+       ;; translations are up-to-date, and in 0.16.5 they are not, so
+       ;; "make check" fails.  Therefore, we disable tests for now.
+       ;;
+       ;; XXX TODO Try re-enabling tests in gajim-0.16.6 or later.
+       ;;
+       #:tests? #f
+       #:phases
        (modify-phases %standard-phases
          (add-after 'install 'wrap-program
           (lambda* (#:key outputs #:allow-other-keys)