[gegl] configure: bump required babl to 0.1.34

[Øyvind Kolås <ok src gnome org>]

commit 395dc1c525a4a3fb5db3a9da143fb64546345e43
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Oct 6 16:21:58 2017 +0200

    configure: bump required babl to 0.1.34

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f758485..6a4b4bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,7 +37,7 @@ m4_define([gegl_stable],
 m4_define([gimp_full_name], [Generic Graphical Library])
 
 # required versions of external libraries
-m4_define([babl_required_version], [0.1.32])
+m4_define([babl_required_version], [0.1.34])
 m4_define([cairo_required_version], [0.0.0])
 m4_define([exiv2_required_version], [0.25])
 m4_define([gdk_pixbuf_required_version], [2.32.0])