[evolution-data-server] Bump also Base version

[Milan Crha <mcrha src gnome org>]

commit 91fac9333b4245d1de3c0539f523fe8cf5eda728
Author: Milan Crha <mcrha redhat com>
Date:   Mon Sep 21 11:43:16 2015 +0200

    Bump also Base version

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b6e9931..9c459ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,8 +11,8 @@ dnl Base Version: This is for API/version tracking for things like
 dnl Bonobo server files.  This should always be the major/minor of
 dnl the stable version or stable version to be.  Note, this is set
 dnl the way it is so that GETTEXT_PACKAGE will be parsed correctly.
-BASE_VERSION=3.18
-m4_define([base_version], [3.18])
+BASE_VERSION=3.20
+m4_define([base_version], [3.20])
 
 dnl This number is meaningless, but we're now stuck with it in our
 dnl library names for backward compatibility.