[master] e39ac61 Bump serial

[Federico G. Schwindt]

commit e39ac6197d10c3691772952bdd891a7d8e987ac1
Author: Federico G. Schwindt <fgsch at lodoss.net>
Date:   Wed Jan 7 23:23:24 2015 +0000

    Bump serial
    
    Forgotten when compatibility for autoconf < 2.63b was added.

diff --git a/varnish.m4 b/varnish.m4
index 504b658..e0eff8c 100644
--- a/varnish.m4
+++ b/varnish.m4
@@ -1,5 +1,5 @@
 # varnish.m4 - Macros to locate Varnish header files.            -*- Autoconf -*-
-# serial 2 (varnish-4.0)
+# serial 3 (varnish-4.0)
 
 # Copyright (c) 2013-2014 Varnish Software AS
 # All rights reserved.