fix version name

configure.ac

 AC_INIT([Gajim - A Jabber Instant Messager],
-		[0.12-alpha],[http://trac.gajim.org/],[gajim])
+		[0.12-alpha1],[http://trac.gajim.org/],[gajim])
 AC_PREREQ([2.59])
 AM_INIT_AUTOMAKE([1.8])
 AC_CONFIG_HEADER(config.h)

src/common/defs.py

@@ -3,7 +3,7 @@ import re
 docdir = '../'
 datadir = '../'
 
-version = '0.12-alpha'
+version = '0.12-alpha1'
 
 import sys, os.path
 for base in ('.', 'common'):