prepare 0.16-beta1 release

autogen.sh

 #!/usr/bin/env bash
-  gajimversion="0.16-alpha2"
+  gajimversion="0.16-beta1"
   if [ -d ".hg" ]; then
     node=$(hg  tip --template "{node}")
     hgversion="-${node:0:12}"

debian/changelog

+gajim (0.16~beta1-1) unstable; urgency=low
+
+  * New upstream release
+
+ -- Yann Leboulanger <yann@leboulanger.org>  Thu, 29 Aug 2013 15:29:13 +0200
+
 gajim (0.16~alpha2-1) unstable; urgency=low
 
   * New upstream release

src/common/defs.py

@@ -27,7 +27,7 @@ docdir = '../'
 basedir   = '../'
 localedir = '../po'
 
-version = '0.16-alpha2'
+version = '0.16-beta1'
 import subprocess
 try:
     node = subprocess.Popen('hg tip --template "{node|short}"', shell=True,