[gimp] configure/app: depend on GEGL 0.4.8

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 6ad5d745658c387daa310259851b092bdc418e46
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat Aug 18 15:23:22 2018 +0200

    configure/app: depend on GEGL 0.4.8

 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 04c19b18ca..1559d5efcd 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 4
-#define GEGL_REQUIRED_MICRO 6
+#define GEGL_REQUIRED_MICRO 8
 
   gegl_get_version (&gegl_major_version,
                     &gegl_minor_version,
diff --git a/configure.ac b/configure.ac
index c8b4ff3172..2920e9f8de 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,7 +45,7 @@ m4_define([gimp_full_name], [GNU Image Manipulation Program])
 # required versions of other packages
 m4_define([babl_required_version], [0.1.56])
 m4_define([gegl_major_minor_version], [0.4])
-m4_define([gegl_micro_version], [7])
+m4_define([gegl_micro_version], [8])
 m4_define([gegl_required_version],
           [gegl_major_minor_version.gegl_micro_version])
 m4_define([glib_required_version], [2.56.0])