[gimp] configure.ac: require GEGL => 0.3.27

[Michael Natterer <mitch src gnome org>]

commit 89a9d0e93eae881aaf731d8bfbf73e2acc6a3af0
Author: Michael Natterer <mitch gimp org>
Date:   Sun Dec 17 18:19:08 2017 +0100

    configure.ac: require GEGL => 0.3.27

 app/sanity.c |    2 +-
 configure.ac |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/app/sanity.c b/app/sanity.c
index ccf2f68..667ac4f 100644
--- a/app/sanity.c
+++ b/app/sanity.c
@@ -518,7 +518,7 @@ sanity_check_gegl (void)
 
 #define GEGL_REQUIRED_MAJOR 0
 #define GEGL_REQUIRED_MINOR 3
-#define GEGL_REQUIRED_MICRO 24
+#define GEGL_REQUIRED_MICRO 27
 
   gegl_get_version (&gegl_major_version,
                     &gegl_minor_version,
diff --git a/configure.ac b/configure.ac
index ba42fab..fc00af8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,7 +44,7 @@ m4_define([gimp_full_name], [GNU Image Manipulation Program])
 
 # required versions of other packages
 m4_define([babl_required_version], [0.1.38])
-m4_define([gegl_required_version], [0.3.24])
+m4_define([gegl_required_version], [0.3.27])
 m4_define([glib_required_version], [2.40.0])
 m4_define([atk_required_version], [2.2.0])
 m4_define([gtk_required_version], [2.24.10])