[aravis] build: bump gtk+ version requirement to 2.14

[Emmanuel Pacaud <emmanuel src gnome org>]

commit e871d5c452c973b5d39ec1476bfb83ff13ec35ab
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Fri Jun 8 15:55:41 2012 +0200

    build: bump gtk+ version requirement to 2.14
    
    Aravis uses gtk_widget_get_window, which appeared in gtk 2.14.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f155cae..1192238 100644
--- a/configure.ac
+++ b/configure.ac
@@ -65,7 +65,7 @@ ARAVIS_VIEWER_REQUIREMENTS=$ARAVIS_GSTREAMER_REQUIREMENTS
 if test "x$enable_gtk3" = "xyes"; then
 	ARAVIS_VIEWER_REQUIREMENTS+=" gtk+-3.0"
 else
-	ARAVIS_VIEWER_REQUIREMENTS+=" gtk+-2.0 >= 2.12"
+	ARAVIS_VIEWER_REQUIREMENTS+=" gtk+-2.0 >= 2.14"
 fi
 AM_CONDITIONAL(ARAVIS_WITH_GTK3, test "x$enable_gtk3" = "xyes")