[gthumb] require exiv2 version 0.21

[Paolo Bacchilega <paobac src gnome org>]

commit 795a3973afc67116f5682ce7df4531a729045ec3
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Apr 8 10:48:51 2012 +0200

    require exiv2 version 0.21
    
    since the code uses Exiv2::LogMsg
    
    [bug #673711]

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e2bbfd1..854c26b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -47,7 +47,7 @@ GTHUMB_EXTENSION_RULES
 
 GLIB_REQUIRED=2.28.0
 GTK_REQUIRED=3.2.0
-EXIV2_REQUIRED=0.18
+EXIV2_REQUIRED=0.21
 CLUTTER_REQUIRED=1.0.0
 CLUTTER_GTK_REQUIRED=1.0.0
 GSTREAMER_REQUIRED=0.10